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Wuzhi Audio ZK-MT21 Bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass AMP AUX
[Amplifier Board] Tip: Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient output power. The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power. Please make sure that the power of the adapter power supply is greater than the actual working power of the amplifier! You can check our others amplifier boards here. FAQ: 1. How to choose a power supply? The power supply with the board is very important. The ripple of the selected power supply must be small. A power supply with a large ripple will cause the bottom noise of the power amplifier board to become larger and there will be current noise. The higher the voltage, the greater the current, and the more adequate the output power. The power supply is 12V1A and can be equipped with 3-4inch speakers. If it is above 19V 5A, there is no problem with 8-10 inches, and the power supply must be highly regarded. If the voltage is too low, the amplified sound will easily cause sound distortion. If the current is too low, the speaker will pull down the voltage, which will result in abnormal operation or poor sound quality. It is recommended to use a power supply of 18V19V24V with a current above 5A. If you only have 9V12V or 1A 2A power supply, it can be used but the power is low. When the volume is selected close to the maximum, it may be distorted and affect the sound quality. 2. How to choose a speaker? Regarding speaker types: commonly used speakers are generally 4-8 ohms, which can be used. The left and right channel speakers need to be connected to full-range speakers or mid- to high-frequency speakers, and the power is between 20W-100W. The subwoofer speaker cannot be connected to an ordinary speaker, and a speaker with a subwoofer speaker must be connected with a power between 20-100. The dive frequency of the subwoofer speaker must be at least 50 Hz. If your speaker has a low power, such as between 20W-50W, it can be used. You need a lower power supply voltage to prevent the speaker from burning after amplifying the sound. For example, choose a power supply below 15V. If you are a 50W-100W speaker, don't worry about the problem of speaker burnout. You can choose a 12-24V power supply. The higher the selected voltage, the greater the sound or power that can be output. The speaker power should not exceed 100W, otherwise it will affect the sound quality. 3. Introduction to audio input mode This audio power amplifier module has two audio input methods: one is Bluetooth input, the other is AUX input, Bluetooth mode is preferred. Bluetooth can be connected in any mode. As long as the Bluetooth connection is successful, it is in Bluetooth mode, and the Bluetooth mode supports automatic connection back. When Bluetooth is not connected, AUX plug-in is in AUX mode. It should be note that when using AUX mode, you need to confirm that the Bluetooth connection of this module has been disconnected. 4. How to adjust the main volume? The MAIN—VOLUME knob adjusts the main volume. Right-handed main volume increases, left-handed main volume decreases. The main volume affects the volume of the left and right channels and the subwoofer. 5. How to adjust the left and right channel high and low sounds? The R&L CHANNEL—BASS knob controls the bass, right-turning bass enhancement, left-turning bass attenuation. When the knob is in the rightmost position, the bass is neither enhanced nor attenuated. The R&L CHANNEL—TREBLE knob controls the treble, the right-handed treble is enhanced, and the left-handed treble is attenuated. When the knob is in the middle position, the high pitch is neither enhanced nor attenuated. Note when adjusting the treble and bass: when the treble or bass is adjusted to the maximum by turning right, if the sound is distorted, the gain of the treble or bass adjustment is too large. You need to turn the treble or bass knob to the left to lower the gain or turn the right Turn the MAIN-VOLUME knob to the left to reduce the total volume. 6. How to adjust the subwoofer? SUBWOOFER—VOLUME knob is used to control the volume of the subwoofer. Right-handed volume increases, and left-handed volume decreases. The SUBWOOFER—FREQ knob controls the cutoff frequency of the subwoofer. The right-hand frequency increases, and the left-hand frequency decreases. The frequency adjustment range is 20HZ-200HZ. 7. The voice is small and okay. When the voice becomes louder, the voice becomes muddy? The sound is distorted, please turn down the total volume or change to a higher voltage adapter power supply. 8. The sound is small, but when the sound becomes louder, the sound freezes? If the input power is insufficient, the power supply itself is protected against intermittent power failure. Please replace it with a higher-power power supply; or if the power is too large, the power amplifier board will generate serious heat and thermal protection has occurred. Reduce power usage or enhance heat dissipation. 9. What factors are related to the sound quality? The sound quality is not only related to the power amplifier module, but also related to the power supply, sound source, and the entire audio system. Basically, every aspect of the audio system will affect the sound quality, among which the main links are the audio transmission line, the audio power supply, the tone circuit, the power amplifier circuit, the speakers and the surrounding environment. The sound quality is the best only when the sound source, power supply, amplifier module and speakers are matched. Feature: Product Name: 2.1 channel audio amplifier module Product Model: ZK-MT21 Bluetooth Version: 5.0 (no shielding, 15 meters) Input Sensitivity: 500mV Audio Input: AUX + Bluetooth Channel: 2.1 Chip Solution: Domestic power amplifier chip Power Range: DC 12-20 V / 5A above (Do not connect to 24V battery pack) Adapter Speaker: 20-100 W, 4-8 Ω Output Power: Left and right channels <50W, Subwoofer <100W Protection Mechanism: Anti reverse connection. Overheat. Overcurrent. Short circuit Product Dimensions: 93mm*90mm*22mm Package Weight : about 185g (packaging) Package Includes: 1 x ZK-MT21 bluetooth 5.0 Subwoofer Amplifier Board 50WX2+100W 2.1 Channel Power Audio Stereo Amplifier Tone Board Bass AMP AUX
1K Ohm Linear Taper 16mm Rotary Potentiometer Elcon
[Potentiometer] Elcon B1K 1KΩ 16mm Rotary Potentiometer – 3 Pin D-Type Shaft The Elcon B1K 1KΩ Rotary Potentiometer is a compact 3-pin linear taper potentiometer designed for adjusting voltage, resistance, tone, brightness, speed, and other electrical parameters in electronic circuits. It has a total resistance of 1KΩ, with the resistance distributed linearly across the rotation of the shaft. The potentiometer can be used as a variable resistor or as a variable voltage divider. The two outer pins provide the full resistance value, while the center pin acts as the wiper and provides an adjustable resistance or voltage depending on the circuit connection. Its D-type shaft provides a secure grip for a compatible knob, while the included nut allows the potentiometer to be securely fixed to a panel or enclosure. The compact 16mm body makes it suitable for PCB and general-purpose electronic applications. ⭐ Key Features 1KΩ total resistance B1K linear taper 3-pin configuration D-type shaft Compact 16mm potentiometer Includes fixing nut Suitable for PCB mounting Can be used as a variable resistor Can be used as a variable voltage divider Suitable for tone and electronic control applications Breadboard compatible according to the supplied specifications 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Potentiometer Value: B1K / 1KΩ Taper: Linear Number of Pins: 3 Shaft Type: D-Type Shaft Diameter: 4mm Shaft Length: 8–10mm Pins Pitch: 4.4mm Dimensions: 25mm × 16mm × 16mm Nut Inner Diameter: 6mm Nut Outer Diameter: 10mm Mounting: PCB / Panel Mount Breadboard Compatible: Yes 🔌 Pin Function Outer Pin 1: Resistive track terminal Center Pin: Wiper / Variable output Outer Pin 3: Resistive track terminal The resistance between the two outer pins remains approximately 1KΩ, while the resistance between the center pin and either outer pin changes as the shaft is rotated. 🔧 Applications Tone Control Audio Circuits Volume & Signal Adjustment LED Brightness Control Motor Speed Control Voltage Adjustment Variable Resistor Applications Arduino Projects DIY Electronics Projects PCB Prototyping General Electronic Control Circuits 🛠️ How It Works When used as a potentiometer, the center pin acts as the adjustable wiper and can provide a variable output across the rotation range. When used as a variable resistor, the wiper can be connected with one of the outer terminals to obtain an adjustable resistance. 📦 Package Includes 1 × Elcon B1K 1KΩ 3-Pin Rotary Potentiometer 1 × Fixing Nut ⚠️ Note Product images are for illustrative purposes only and may differ slightly from the actual product. The supplied specifications state a shaft length of 8–10mm; please verify the exact dimensions against the available product batch before installation.
100K Ohm Linear Taper 16mm Rotary Potentiometer Elcon
[Potentiometer] Elcon B100K 100KΩ 16mm Rotary Potentiometer – 3 Pin D-Type Shaft The Elcon B100K 100KΩ Rotary Potentiometer is a compact 3-pin linear taper potentiometer designed for adjusting voltage, resistance, signal levels, brightness, motor speed, and other electrical parameters in electronic circuits. It has a total resistance of 100KΩ, with the resistance distributed linearly across the rotation of the shaft. The potentiometer can be used as a variable resistor or as a variable voltage divider. The two outer pins provide the full resistance value, while the center pin acts as the wiper and provides an adjustable resistance or voltage depending on the circuit connection. Its D-type shaft provides a secure grip for a compatible knob, while the included nut allows the potentiometer to be securely fixed to a panel or enclosure. The compact 16mm body makes it suitable for PCB and general-purpose electronic applications. ⭐ Key Features 100KΩ total resistance B100K linear taper 3-pin configuration D-type shaft Compact 16mm potentiometer Includes fixing nut Suitable for PCB mounting Can be used as a variable resistor Can be used as a variable voltage divider Suitable for tone and electronic control applications Breadboard compatible according to the supplied specifications 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Potentiometer Value: B100K / 100KΩ Taper: Linear Number of Pins: 3 Shaft Type: D-Type Shaft Diameter: 4mm Shaft Length: 8–10mm Pins Pitch: 4.4mm Dimensions: 25mm × 16mm × 16mm Nut Inner Diameter: 6mm Nut Outer Diameter: 10mm Mounting: PCB / Panel Mount Breadboard Compatible: Yes 🔌 Pin Function Outer Pin 1: Resistive track terminal Center Pin: Wiper / Variable output Outer Pin 3: Resistive track terminal The resistance between the two outer pins remains approximately 100KΩ, while the resistance between the center pin and either outer pin changes as the shaft is rotated. 🔧 Applications Tone Control Audio Circuits Signal Level Adjustment LED Brightness Control Motor Speed Control Voltage Adjustment Variable Resistor Applications Arduino Projects DIY Electronics Projects PCB Prototyping General Electronic Control Circuits 🛠️ How It Works When used as a potentiometer, the center pin acts as the adjustable wiper and provides a variable output across the rotation range. When used as a variable resistor, the wiper can be connected with one of the outer terminals to obtain an adjustable resistance. 📦 Package Includes 1 × Elcon B100K 100KΩ 3-Pin Rotary Potentiometer 1 × Fixing Nut ⚠️ Note Product images are for illustrative purposes only and may differ slightly from the actual product. The supplied specifications state a shaft length of 8–10mm; please verify the exact dimensions against the actual product batch before installation.
5K Ohm Linear Taper 16mm Rotary Potentiometer-Elcon
[Potentiometer] Elcon B5K 5KΩ 16mm Rotary Potentiometer – 3 Pin D-Type Shaft The Elcon B5K 5KΩ Rotary Potentiometer is a compact 3-pin linear taper potentiometer designed for adjusting voltage, resistance, tone, brightness, motor speed, and other electrical parameters in electronic circuits. It has a total resistance of 5KΩ, with the resistance distributed linearly across the rotation of the shaft. The potentiometer can be used as a variable resistor or as a variable voltage divider. The two outer pins provide the full resistance value, while the center pin acts as the wiper and provides an adjustable resistance or voltage depending on the circuit connection. Its D-type shaft provides a secure grip for a compatible knob, while the included nut allows the potentiometer to be securely fixed to a panel or enclosure. The compact 16mm body makes it suitable for PCB and general-purpose electronic applications. ⭐ Key Features 5KΩ total resistance B5K linear taper 3-pin configuration D-type shaft Compact 16mm potentiometer Includes fixing nut Suitable for PCB mounting Can be used as a variable resistor Can be used as a variable voltage divider Suitable for tone and electronic control applications Breadboard compatible according to the supplied specifications 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Potentiometer Value: B5K / 5KΩ Taper: Linear Number of Pins: 3 Shaft Type: D-Type Shaft Diameter: 4mm Shaft Length: 8–10mm Pins Pitch: 4.4mm Dimensions: 25mm × 16mm × 16mm Nut Inner Diameter: 6mm Nut Outer Diameter: 10mm Mounting: PCB / Panel Mount Breadboard Compatible: Yes 🔌 Pin Function Outer Pin 1: Resistive track terminal Center Pin: Wiper / Variable output Outer Pin 3: Resistive track terminal The resistance between the two outer pins remains approximately 5KΩ, while the resistance between the center pin and either outer pin changes as the shaft is rotated. 🔧 Applications Tone Control Audio Circuits Volume & Signal Adjustment LED Brightness Control Motor Speed Control Voltage Adjustment Variable Resistor Applications Arduino Projects DIY Electronics Projects PCB Prototyping General Electronic Control Circuits 🛠️ How It Works When used as a potentiometer, the center pin acts as the adjustable wiper and provides a variable output across the rotation range. When used as a variable resistor, the wiper can be connected with one of the outer terminals to obtain an adjustable resistance. 📦 Package Includes 1 × Elcon B5K 5KΩ 3-Pin Rotary Potentiometer 1 × Fixing Nut ⚠️ Note Product images are for illustrative purposes only and may differ slightly from the actual product. The supplied specifications state a shaft length of 8–10mm; please verify the exact dimensions against the actual product batch before installation.
10K Ohm Linear Taper 16mm Rotary Potentiometer Elcon
[Potentiometer] Elcon B10K 10KΩ 16mm Rotary Potentiometer – 3 Pin D-Type Shaft The Elcon B10K 10KΩ Rotary Potentiometer is a compact 3-pin linear taper potentiometer designed for adjusting voltage, resistance, tone, brightness, motor speed, and other electrical parameters in electronic circuits. It has a total resistance of 10KΩ, with the resistance distributed linearly across the rotation of the shaft. The potentiometer can be used as a variable resistor or as a variable voltage divider. The two outer pins provide the full resistance value, while the center pin acts as the wiper and provides an adjustable resistance or voltage depending on the circuit connection. Its D-type shaft provides a secure grip for a compatible knob, while the included nut allows the potentiometer to be securely fixed to a panel or enclosure. The compact 16mm body makes it suitable for PCB and general-purpose electronic applications. ⭐ Key Features 10KΩ total resistance B10K linear taper 3-pin configuration D-type shaft Compact 16mm potentiometer Includes fixing nut Suitable for PCB mounting Can be used as a variable resistor Can be used as a variable voltage divider Suitable for tone and electronic control applications Breadboard compatible according to the supplied specifications 📋 Technical Specifications Product Type: Rotary Potentiometer Brand: Elcon Potentiometer Value: B10K / 10KΩ Taper: Linear Number of Pins: 3 Shaft Type: D-Type Shaft Diameter: 4mm Shaft Length: 8–10mm Pins Pitch: 4.4mm Dimensions: 25mm × 16mm × 16mm Nut Inner Diameter: 6mm Nut Outer Diameter: 10mm Mounting: PCB / Panel Mount Breadboard Compatible: Yes 🔌 Pin Function Outer Pin 1: Resistive track terminal Center Pin: Wiper / Variable output Outer Pin 3: Resistive track terminal The resistance between the two outer pins remains approximately 10KΩ, while the resistance between the center pin and either outer pin changes as the shaft is rotated. 🔧 Applications Tone Control Audio Circuits Volume & Signal Adjustment LED Brightness Control Motor Speed Control Voltage Adjustment Variable Resistor Applications Arduino Projects DIY Electronics Projects PCB Prototyping General Electronic Control Circuits 🛠️ How It Works When used as a potentiometer, the center pin acts as the adjustable wiper and provides a variable output across the rotation range. When used as a variable resistor, the wiper can be connected with one of the outer terminals to obtain an adjustable resistance. 📦 Package Includes 1 × Elcon B10K 10KΩ 3-Pin Rotary Potentiometer 1 × Fixing Nut ⚠️ Note Product images are for illustrative purposes only and may differ slightly from the actual product. The supplied specifications state a shaft length of 8–10mm; please verify the exact dimensions against the actual product batch before installation.
100K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] The 100K 16mm Linear Taper Dual Gang Rotary Potentiometer is a precision variable resistor designed for accurate voltage and signal adjustment in audio, electronic, and industrial applications. Its dual-gang construction enables two separate circuits to be controlled simultaneously using a single rotating shaft, making it ideal for stereo volume control and dual-channel signal adjustment. Manufactured with high-quality resistive elements and durable metal components, the potentiometer delivers smooth rotation, low noise operation, excellent linearity, and long mechanical life. The 16mm body size provides a compact solution suitable for PCB mounting in amplifiers, mixers, DIY audio systems, control panels, and electronic equipment. The 100KΩ linear taper provides uniform resistance variation throughout the rotation angle, making it suitable for voltage dividers, signal attenuation, and control circuits where linear response is required. With a standard knurled shaft and 6 solder terminals, this potentiometer is easy to install and compatible with a wide variety of control knobs and electronic projects. 🔹 Key Features Dual gang rotary potentiometer 100KΩ linear taper resistance Smooth and precise rotation 16mm compact body 6-pin solder terminal design Low noise operation Long mechanical life Durable metal shaft Easy PCB mounting Suitable for stereo audio control 🔹 Technical Specifications Product Type: Dual Gang Rotary Potentiometer Resistance Value: 100KΩ Taper Type: Linear (B100K) Number of Gangs: Dual Number of Pins: 6 Body Diameter: 16mm Shaft Type: Knurled Metal Shaft Shaft Diameter: 6mm Shaft Length: Approx. 15mm Rotation Angle: Approx. 300° Mounting Type: PCB Through Hole Terminal Type: Solder Pins Power Rating: 0.125W (Typical) Resistance Tolerance: ±20% Operating Temperature: -10°C to +70°C 🔹 Applications Suitable for: Audio amplifiers Stereo volume control Tone control circuits Audio mixers Power amplifiers DIY electronics Signal level adjustment Voltage divider circuits Instrumentation equipment Electronic control panels 🔹 Package Includes 1 × 100K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
10K Ohm 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] 16mm 10KΩ 6-Pin Dual-Gang Rotary Potentiometer The 16mm 10KΩ 6-Pin Rotary Potentiometer is a compact and versatile dual-gang rotary potentiometer designed to control two separate electrical channels simultaneously using a single rotary shaft. With 6 pins in total, each potentiometer section has 3 terminals, making it suitable for stereo audio control, dual-channel signal adjustment, amplifier circuits, tone control, and various DIY electronics applications. By rotating the shaft, the resistance of each potentiometer section can be adjusted smoothly. The dual-gang construction allows both channels to be controlled together, making this potentiometer particularly useful for stereo volume control and other applications requiring synchronized adjustment. ⭐ Key Features 10KΩ resistance value 16mm body diameter 6-pin dual-gang configuration 3 pins per potentiometer section Single rotary shaft controls both gangs Smooth and reliable rotary operation Compact design Suitable for PCB and panel mounting Ideal for stereo and dual-channel applications Suitable for audio and general electronic circuits Compatible with suitable potentiometer knobs 📋 Technical Specifications Product Type: Rotary Potentiometer Resistance Value: 10KΩ Body Diameter: 16mm Configuration: Dual Gang Number of Pins: 6 Pins per Gang: 3 Operation: Single Turn Rotary Shaft Length: 9mm Total Potentiometer Height: 27mm Mounting Type: PCB / Panel Mount Application: Variable Resistance / Voltage Control 🔌 Pin Configuration The potentiometer has 6 pins in total, divided into two independent 3-pin sections: Pins 1, 2 & 3: First potentiometer section Pins 4, 5 & 6: Second potentiometer section Each section consists of two resistive-track terminals and one center wiper terminal. Rotating the shaft moves the wiper and changes the resistance or output voltage. 🔧 Applications Stereo Audio Volume Control Audio Amplifiers Tone Control Circuits Pre-Amplifier Circuits Dual-Channel Signal Adjustment LED Brightness Control Motor Speed Control Power Supply Adjustment 555 Timer Circuits Arduino Projects ESP32 Projects DIY Electronics Projects Audio Equipment Electronic Prototyping 🛠️ How to Use The two outer terminals of each potentiometer section can be connected across the required voltage or signal path, while the center terminal works as the adjustable wiper output. In stereo audio applications, one gang can be used for the left channel and the other gang for the right channel, allowing both channels to be adjusted simultaneously. 📦 Package Includes 1 × 16mm 10KΩ 6-Pin Dual-Gang Rotary Potentiometer ⚠️ Precautions Check the pin configuration before connecting the potentiometer. Do not exceed the electrical limits of the connected circuit. Ensure correct wiring when using both gangs for stereo applications. Use a suitable knob compatible with the shaft. The exact taper and shaft shape may vary depending on the product variant.
47K 16mm Linear Taper 6-Pin Dual Gang Rotary Potentiometer
[Potentiometer] The 47K 16mm Linear Taper Dual Gang Rotary Potentiometer is a high-quality variable resistor designed for precise voltage and signal adjustment in audio and electronic circuits. Its dual-gang construction allows simultaneous control of two independent channels using a single shaft, making it perfect for stereo volume and tone control applications. Equipped with a D-cut metal shaft, the potentiometer provides a secure fit for compatible control knobs, preventing slippage during operation. The 47KΩ linear resistance offers uniform resistance change across the entire rotation angle, making it suitable for signal control, voltage divider circuits, and industrial electronic equipment. Built with high-quality resistive elements and durable metal contacts, it delivers smooth rotation, low noise, excellent stability, and a long mechanical life. The compact 16mm body and 6-pin PCB mounting design allow easy installation in amplifiers, mixers, control panels, and DIY electronic projects. 🔹 Key Features Dual gang rotary potentiometer 47KΩ linear taper (B47K) D-cut metal shaft 6-pin PCB mounting Smooth and precise rotation Low noise operation Long mechanical life Compact 16mm body Durable construction Ideal for stereo audio applications 🔹 Technical Specifications Product Type: Dual Gang Rotary Potentiometer Resistance Value: 47KΩ Taper Type: Linear (B47K) Number of Gangs: Dual Number of Pins: 6 Body Diameter: 16mm Shaft Type: D-Cut Metal Shaft Shaft Diameter: 6mm Shaft Length: Approx. 15mm Rotation Angle: Approx. 300° Mounting Type: PCB Through Hole Terminal Type: Solder Pins Power Rating: 0.125W (Typical) Resistance Tolerance: ±20% Operating Temperature: -10°C to +70°C 🔹 Applications Suitable for: Stereo audio amplifiers Volume control circuits Tone control circuits Audio mixers Home audio systems DIY electronics Signal level adjustment Voltage divider circuits Instrumentation equipment Electronic control panels 🔹 Package Includes 1 × 47K 16mm Linear Taper Dual Gang Rotary Potentiometer with D-Cut Shaft
3 Pin SPDT 19.6 mm Slide Switch With 7mm Knob
[Mechanical Switches] 3 Pin SPDT 19.6mm Slide Switch with 7mm Knob (SS-12F15) SPDT (1P2T) Slide Switch • 3 Pin • 2 Position • 19.6mm Compact Size • Panel / PCB Mount The 3 Pin SPDT 19.6mm Slide Switch with 7mm Knob (SS-12F15) is a compact and reliable Single Pole Double Throw (SPDT / 1P2T) slide switch designed for low-power electronic circuits, DIY electronics, embedded systems, robotics, and control applications. With 3 terminals and 2 switching positions, this switch allows a single input to be connected to either of two outputs, making it ideal for signal routing, mode selection, polarity switching, and power control. The switch features a 7mm black sliding knob, durable plastic and metal construction, and mounting holes at both ends for secure installation on PCBs, control panels, and custom enclosures. Its compact 19.6mm body length makes it suitable for projects where space is limited while maintaining smooth and reliable switching performance. Commonly used in Arduino projects, audio circuits, battery-powered devices, toys, instrumentation, and electronic prototyping, the SS-12F15 provides dependable operation with low contact resistance and good electrical insulation. ⭐ Features SPDT (Single Pole Double Throw / 1P2T) configuration 3 terminal pins 2 switching positions Compact 19.6mm body length 7mm black slide knob Smooth and reliable switching action Durable plastic and metal construction PCB and panel mount compatible Mounting holes for secure installation Low contact resistance Long service life Ideal for low-power electronic applications 📋 Technical Specifications Product Type: Mini Slide Switch Model: SS-12F15 Switch Configuration: SPDT (1P2T) Number of Pins: 3 Number of Positions: 2 Maximum Voltage: 30V DC Maximum Current: 0.3A Contact Resistance: 30mΩ Insulation Resistance: 500MΩ Withstand Voltage: 500VAC for 1 Minute Mechanical Life: 10,000 Cycles Body Material: Plastic and Metal Actuator Color: Black Knob Height: 7mm Body Length: 19.6mm Body Width: 5.5mm Total Height: 14.8mm Mounting Hole Diameter: Approx. 2.5mm Mounting Type: PCB / Panel Mount 🔧 Applications Arduino and ESP32 Projects DIY Electronics Robotics Systems Audio Circuits Battery-Powered Devices Signal Routing Mode Selection Power ON/OFF Control DC Motor Direction Control Instrumentation Embedded Systems Educational Projects Electronic Prototyping Consumer Electronics 📦 Package Includes 1 × 3 Pin SPDT 19.6mm Slide Switch with 7mm Knob (SS-12F15) ⚠️ Note Designed for low-current electronic circuits. Ensure correct wiring before applying power. Not intended for high-current AC mains applications. Product appearance may vary slightly depending on the manufacturing batch.
Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control
[Servo Motor] Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control offers 3 modes to check servos or ESC. The Manual Mode allows you to turn the knob to different speeds and check the reaction time. The Neutral mode makes the servo go back to the neutral point. The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible. Plus, this servo tester can connect to up to 3 servos simultaneously. You can also connect up to 3 ESCs to test and compare their reaction time respectively. Click and order now! Operation Modes :- Automatic mode:- Operates servos to their end point and back “window wiper” mode: Make the servo swing like window wipers in the biggest angle Manual mode:- Turn the knob with different speed, check the reaction time Neutral / Center mode:- Centers servos to their neutral position Ideal for when setting servos up in a model Features of Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control :- Digital Multi Servo Tester ESC RC Consistency CCPM Master Speed Control Operating Voltage: DC 4.8-6V Offer 3 modes to check servos or ESC The Manual Mode allows you to turn the knob to different speeds and check the reaction time The Neutral mode makes the servo go back to the neutral point The Automatic ’’Window Wiper’’ Mode makes the servo swing like a window wiper in the largest angle possible Connect to up to 3 servos simultaneously Connect up to 3 ESCs to test and compare their reaction time respectively Built with LED indicators Output signal: 1.5ms±0.5ms Size: 36.5 x 31.0 x 22mm
3V 6V 12V 24V 35V PWM DC Motor Speed Regulator
[Brushed DC motor Driver] 3V 6V 12V 24V 35V PWM DC Motor Speed Regulator is a Mini Style DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM). Precautions: DC motor governor input is DC, can not directly connect to the AC (for example home 220V AC), otherwise, it will burn! DC power supply positive and negative terminals do not reverse, otherwise, the governor may be damaged. The motor can be positive or negative when the direction of operation and expectations do not match, you can adjust the line order to change the direction. Adjust the potentiometer knob to change the governor output duty cycle, the motor speed changes. Features: Mini DC 4.5-35V 5A PWM Motor Speed Controller. Wide voltage DC motor speed controller. Operating voltage: DC4.5V-35V Output current: 0-5A Output power: 90W (max) PWM duty cycle: 1% -100%. Package Includes: 1 x 3V 6V 12V 24V 35V PWM DC Motor Speed Regulator
Potentiometer Knob 113 with Buffer (Pack of 2)
[Electronic Components, Potentiometer] Multi Colour Potentiometer Knob/Rotary Switch Cap for Knurled Potentiometer This potentiometer knob 113 provides a firm grip on the potentiometer stick, making controlling operation very convenient and easy. This knob comes with a translucent buffer to tighten the potentiometer stick with the knob. Features 1. Top Diameter: 16mm ( +/- 1mm ). 2. Bottom Diameter: 20mm ( +/- 1mm ). 3. Knob Height: 17mm ( +/- 1mm ). 4. Knob Internal Diameter: ~6mm.
Out of stockKnob-202 Multiple Colour Potentiometer Knob With Buffer(Pack of 2)
[Potentiometer] Multi Colour Potentiometer Knob/Rotary Switch Cap for Knurled Potentiometer This Potentiometer knob with buffer provides a firm grip on the potentiometer stick, making controlling operation very convenient and easy. This knob comes with a translucent buffer to tighten the potentiometer stick with the knob. Features 1. Top Diameter: 11mm ( +/- 1mm ). 2. Bottom Diameter: 15mm ( +/- 1mm ). 3. Knob Height: 17mm ( +/- 1mm ). 4. Knob Internal Diameter: ~6mm 5. Colour: Black and Green. Black and Grey. Black and Yellow. Black and Red.
AC 220V 2000W SCR Voltage Regulator Dimmers Speed Controller Thermostat
[AC Motor Driver] 2000W AC 220V SCR Thyristor Voltage Regulator – Motor Speed Controller & Dimmer The 2000W AC SCR Thyristor Voltage Regulator is a high-power electronic controller designed for adjusting AC voltage to control light brightness, motor speed, heating temperature, and other suitable AC loads. It uses a high-power bidirectional silicon-controlled device and an onboard potentiometer for convenient voltage adjustment. The controller can be connected in series with a compatible AC load and adjusted using the rotary knob. It is suitable for applications such as electric furnaces, water heaters, lamps, small motors, electric irons, and other compatible resistive or motor loads. ⭐ Key Features 2000W maximum advertised power AC voltage regulation 90–220V AC input Adjustable output voltage: 50–220V AC High-power SCR/thyristor design Onboard adjustable potentiometer Suitable for light brightness control Suitable for motor speed control Suitable for heating temperature control Compact design Potentiometer includes fixing nut No additional external control components required for basic operation 📋 Technical Specifications Product Type: AC SCR Voltage Regulator Controller Type: Thyristor / SCR Regulator Input Voltage: 90–220V AC Adjustable Output Voltage: 50–220V AC Maximum Power: 2000W SCR Rating: 25A Recommended Power for Voltage Adjustment: Up to approximately 1000W / 5A Recommended Current for Electrical Machines: Up to approximately 3A Control Method: Rotary Potentiometer Material: Plastic / Metal Dimensions: 48 × 55 × 27mm Weight: Approximately 41g Application: AC Voltage / Speed / Brightness / Temperature Control 🛠️ How to Use Connect the controller in series with the compatible AC load according to the input and output markings. After making sure all connections are secure, rotate the potentiometer to adjust the output and control the connected load. For resistive loads such as lamps or heaters, the controller can be used for brightness or heating control. For compatible small AC motors, it can be used for speed adjustment. 🔧 Applications AC Lamp Dimmer Light Brightness Control Small AC Motor Speed Control Electric Furnace Control Water Heater Control Electric Iron Control Heating Element Control Temperature Control AC Voltage Regulation DIY AC Control Projects 📦 Package Includes 1 × 2000W 220V SCR Thyristor AC Voltage Regulator / Motor Speed Controller ⚠️ Precautions This module works with potentially lethal AC mains voltage. Installation should only be performed by a qualified person familiar with AC electrical systems. Do not touch the board or terminals while powered. Do not exceed the specified voltage, current, or power ratings. The 2000W rating is a maximum advertised rating; actual safe continuous power depends on load type, cooling, enclosure, and operating conditions. For voltage adjustment applications, the supplied specification recommends approximately 1000W / 5A or below. For electrical machines, the supplied specification recommends 3A or below. Provide adequate ventilation and heat dissipation at higher loads. Use appropriate fusing and electrical protection. Ensure all wiring and connections are properly insulated and secured. This type of controller is not suitable for every AC load; verify load compatibility before use.
Infrared Obstacle Avoidance IR Sensor Module (Active Low)
[IR and PIR Sensors] Infrared Obstacle Avoidance IR Sensor Module (Active Low) has a pair of infrared transmitting and receiving tubes. When the transmitted light waves are reflected back, the reflected IR waves will be received by the receiver tube. The onboard comparator circuitry does the processing and the green indicator LED comes to life. The module features a 3 wire interface with Vcc, GND, and an OUTPUT pin on its tail. It works fine with 3.3 to 5V levels. Upon hindrance/reflectance, the output pin gives out a digital signal (a low-level signal). The onboard preset helps to fine-tune the range of operation, the effective distance range is 2cm to 80cm. Circuit Diagram of IR Sensor With Arduino Features: Easy to assemble and use Onboard detection indication The effective distance range of 2cm to 80cm A preset knob to fine-tune distance range If there is an obstacle, the indicator lights on the circuit board. Package Includes : 1 x Infrared Obstacle Avoidance IR Sensor Module (Active Low)