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MCU: ESP8266/ESP32. Sensors: soil moisture (capacitive preferred), temp/humidity (DHT), light sensor. Actuation: relay/pump/solenoid valve demo. Dashboard: MQTT/HTTP. Power: 5V input + relay isolation.
5 Pin Mini SPDT Relay 12V 10A 250V PCB Mount Electromagnetic Relay
[Relay Module, Relays] 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A The 12V PCB Mount Sugar Cube SPDT Relay is a compact Single Pole Double Throw (SPDT) electromagnetic relay designed for switching AC and DC electrical loads using a microcontroller, sensor, automation circuit, or other low-power control system. Its compact PCB-mount design makes it suitable for DIY electronics, home automation, security systems, switching circuits, motor control, lighting control, and embedded applications. The relay features a 12V DC coil and a 5-pin SPDT configuration consisting of two coil terminals, COM (Common), NO (Normally Open), and NC (Normally Closed) contacts. When the coil is energized, the internal contact switches between the NC and NO terminals. With contact ratings of up to 10A at 250V AC, 10A at 125V AC, 12A at 120V DC, and 10A at 28V DC, this relay is suitable for a wide range of electrical switching applications. ⭐ Key Features SPDT (Single Pole Double Throw) relay 12V DC coil Compact Sugar Cube design 5-pin configuration PCB mounting type 10A @ 250V AC contact rating 10A @ 125V AC contact rating 12A @ 120V DC contact rating 10A @ 28V DC contact rating Coil resistance: approximately 270Ω Approximately 45mA nominal coil current 50/60Hz frequency specification Fast switching response Suitable for microcontroller and sensor-controlled switching Ideal for automation and control applications 📋 Technical Specifications Product Type: PCB Mount Relay Relay Type: SPDT (Single Pole Double Throw) Contact Configuration: 1 Form C Number of Pins: 5 Coil Voltage: 12V DC Trigger Voltage: 12V DC Coil Resistance: 270Ω Nominal Coil Current: Approximately 45mA Frequency: 50/60Hz Maximum AC Load: 10A @ 250V AC Maximum AC Load: 10A @ 125V AC Maximum DC Load: 12A @ 120V DC Maximum DC Load: 10A @ 28V DC Operating Time: 10ms Release Time: 5ms Mounting Type: PCB Mount Contact Terminals: COM / NO / NC Coil Terminals: Coil End 1 / Coil End 2 🔌 Pin Configuration Coil End 1: One terminal of the 12V DC relay coil Coil End 2: Other terminal of the 12V DC relay coil COM: Common switching contact NO: Normally Open contact NC: Normally Closed contact When the relay coil is not energized, COM is connected to NC. When the 12V DC coil is energized, COM switches from NC to NO. 🛠️ How It Works The relay uses an electromagnetic coil to mechanically switch an electrical circuit. Applying 12V DC to the coil energizes the relay and changes the contact position. A load connected between COM and NC remains connected when the relay is inactive. A load connected between COM and NO remains disconnected until the relay coil is energized. This allows a low-power control circuit such as an Arduino, microcontroller, sensor, timer, or automation controller to control a higher-current AC or DC load. 🔧 Applications Arduino Projects Microcontroller Projects Sensor-Controlled Switching Home Automation Security Systems Lighting Control Fan Control Motor Control Pump Control Power Supply Switching Industrial Control Systems Embedded Electronics DIY Electronics Projects 📦 Package Includes 1 × 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 10A ⚠️ Precautions Use a suitable 12V DC supply for the relay coil. Do not exceed the specified contact voltage and current ratings. Check the COM, NO, NC, and coil terminals before wiring. Use suitable flyback protection when driving the relay coil from sensitive electronic circuits. Use appropriate suppression/protection components for inductive loads such as motors, solenoids, and coils. Provide sufficient PCB insulation and clearance when switching mains voltage. Disconnect power before changing or modifying wiring. Do not touch exposed mains-voltage terminals during operation.
Out of stockMini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560
[Brushed DC motor Driver] Mini Motor Drive Shield Expansion Board L293D Module for Arduino UNO MEGA 2560 is a Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC and stepping motors) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz. Features: Enable facility. Overtemperature protection. Logical “0” input voltage up to 1.5V(High noise immunity). Internal clamp diodes. Package Includes: 1 x Mini Motor Drive Shield Expansion Board L293D Module.
Out of stockL298N 2A Based Motor Driver Module
[Brushed DC motor Driver] L298 Motor Driver Module | 2A Dual Channel PWM Control L298 Motor Driver Module, 2A Dual Channel total 4A, PWM Control for motors variable speed, with back EMF protection, versatile for Robotics Arduino Raspberry PI. It is a high voltage, high current, dual full-bridge motor driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Current Sense for each motor. Heatsink for better performance. Power-On LED indicator. Driver chip: L298 dual H-bridge driver chip. Operates up to 35V DC Drive part of the peak current Io: 2A / Bridge Logical part of the terminal power supply range Vss :4.5V-5.5V Logical part of the operating current range: 0 ~ 36mA Maximum power consumption: 20W
Out of stockDC 12V Cabinet Door Lock Electric Lock Assembly Solenoid
[Solenoids and Electromagnets] 12V Electronic Door Lock assembly Solenoid low power consumption This DC 12V Cabinet Door Lock Electric Lock Assembly Solenoid can be used for locking sell-machine, storage shelf, file cabinet and etc. The hidden way of unlocking can be used for an emergency. The lock works as the circuits disconnects, and it will unlock as the instant power-on. It is steady, durable, and energy-saving and had a long lifespan. In the anti-theft and shockproof design, the lock is better than other kinds of locks. After connecting the wires and when the current is available, the electric lock can control the door’s opening and closing. Note: Take care of polarity while making the connection without connector (i.e. Red wire should be connected to the positive and Black wire to negative.) Features: Iron Body Material High quality ultra-compact electric lock. Rustproof, durable, safe, convenient to use. Suction tightly sucks the iron, thus locking the door. Applicable for being installed in the escape door or fire door electronic controlled system. Adopts the principle of electric magnetism, when the current through the silicon, the electromagnetic lock will achieve a strong. Model DC 12V Cabinet Door Lock Rated Operating Voltage (VDC) 12 Rated Current (mA) 0.80A. Power Consumption (Watt) 9.6 Holding Force (N) 2.45 Unlocking Time 1 sec Body Material Iron Metal Energized forms Intermittent Cable Length (cm) 25 Weight (gm) 150 * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stock12V 6 Channel with Light Coupling Relay Module
[Relay Module] This 6 Road/Channel Relay Module (with light coupling) 12V module meets the safety standard as control areas and load area have the isolation groove. Optical coupling isolation module. The triggering of the 6 Road/Channel Relay Module is reliable, more stable. The double FR–4 circuit board design, high-end SMT process. It has power and relay operation instructions. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The inputs of the 8 Channel 12V Relay Module are isolated to protect any delicate control circuitry. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. The use of such high-voltage relay eliminates the risk of heating up of the relay as electromechanical relay limit the current consumption in accordance with a voltage rating. Module interface: The positive (according to the relay voltage VCC: connect power supply) GND: connect power negative IN1: relay module (effective) high-level trigger signal trigger end IN2: relay module (effective) high-level trigger signal trigger end IN3: relay module (effective) high-level trigger signal trigger end IN4: relay module (effective) high-level trigger signal trigger end IN5: relay module (effective) high-level trigger signal trigger end IN6: relay module (effective) high-level trigger signal trigger end IN7: relay module (effective) high-level trigger signal trigger end IN8: relay module (effective) high-level trigger signal trigger end Meaning of High level and Low-level High-level trigger refers to using the anode voltage at the VCC connection way of a trigger and triggers the end when the trigger side has a positive voltage or to trigger voltage when the relay is off. Low-level trigger refers to using the negative voltage at the GND connection way of a trigger and triggers the end when the trigger side has 0 v low voltage or voltage to can trigger, the relay is off. Features : Equipped with high-current relay 10A@250VAC / 10A@30VDC It can control both AC and DC appliances such as Solenoids, Motors, lights, fans, etc High-quality screw terminals (Terminal Block) provided (C, NC, NO) for quick and easy connection A freewheeling diode to protect your microcontroller Input Signal Pin connected to Burg stick for easy accessibility LED status indicators to indicate the relay ON/OFF status Mounting holes provided Signal input with a high-level signal, the common and often start conduction; The relay can directly control all kinds of equipment and load; One often opened a normally closed contact; Blue KF301 terminal line more convenient. It is also able to control various appliances and other types of equipment with a large current. Red working status indicator lights are conducive to safe use. Widely used for all MCU control, industrial sector, PLC control, smart home control. Package Includes: 1 x 12V 6 Channel with Light Coupling Relay Module
4 Channel Isolated 5V 10A Relay Module opto coupler For Arduino PIC AVR DSP ARM
[Relay Module] The 4 Channel Isolated 5V Relay Module is a reliable switching interface that enables low-voltage microcontrollers to safely control high-voltage and high-current electrical devices. Featuring four independent relays with opto-isolation, the module provides excellent electrical separation between the control circuitry and load side for enhanced safety and reliability. In addition, each relay can be individually controlled through dedicated input pins, allowing multiple devices to be switched independently. As a result, the module is ideal for home automation, industrial control systems, robotics, IoT projects, and appliance control applications. Because of its opto-coupler isolation design, the relay board helps protect sensitive microcontrollers from electrical noise and voltage spikes. Furthermore, onboard status LEDs provide clear indication of relay activation and power status. The module supports both AC and DC load switching, making it suitable for controlling lamps, fans, pumps, motors, solenoids, and various household appliances. Moreover, the high-quality relay contacts ensure reliable long-term operation under demanding conditions. This relay module is widely used in Arduino projects, Raspberry Pi automation systems, PLC control panels, industrial automation, smart home systems, and embedded electronics applications. 🔹 Key Features 4 independent relay channels Opto-isolated input design Supports high and low level triggering Compatible with Arduino, Raspberry Pi, ESP32, PIC, AVR, ARM, and PLC High-current relay contacts LED power and relay status indicators Electrical isolation between control and load circuits Suitable for AC and DC load switching Easy interfacing with microcontrollers Industrial-grade design 🔹 Technical Specifications Product Type: 4 Channel Relay Module Operating Voltage: 5V DC Number of Channels: 4 Relay Type: JQC3F-5VDC-C / SRD-05VDC-SL-C / FL-3FF-S-Z (Random) Contact Configuration: SPDT (NO, COM, NC) Maximum AC Load: 250V AC, 10A Maximum DC Load: 30V DC, 10A Trigger Voltage: Approx. 1V – 5V Isolation Method: Opto-Coupler Isolation Input Interface: Standard TTL Control Signal Trigger Mode: High-Level / Low-Level Trigger Status Indicators: Power LED and Relay LEDs Mounting Holes: Yes 🔹 Pin Configuration Control Side VCC – 5V Power Supply GND – Ground IN1 – Relay Channel 1 Control IN2 – Relay Channel 2 Control IN3 – Relay Channel 3 Control IN4 – Relay Channel 4 Control Relay Output Terminals For each channel: COM – Common Terminal NO – Normally Open Contact NC – Normally Closed Contact 🔹 Applications This relay module is suitable for: Arduino projects Raspberry Pi projects ESP32 projects Home automation systems Industrial automation PLC control systems Smart home devices Lighting control Motor and pump control Appliance switching IoT projects 🔹 Package Includes 1 × 4 Channel 5V 10A Opto-Isolated Relay Module
12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 7A
[Relays] 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin 7A The 12V PCB Mount Sugar Cube SPDT Relay is a compact Single Pole Double Throw (SPDT) electromagnetic relay designed for switching AC or DC loads using a microcontroller, sensor, control circuit, or other low-power trigger source. Despite its small size, this relay can be used to control loads up to 7A at 250V AC according to the provided specifications. The relay operates with a 12V DC coil and has a coil resistance of approximately 270Ω, with a nominal coil current of around 45mA. Its compact PCB-mount design makes it suitable for use in automation systems, switching circuits, security systems, control panels, DIY electronics, and embedded projects. The relay features 5 pins: two coil terminals, COM (Common), NO (Normally Open), and NC (Normally Closed). The COM terminal is switched between NO and NC when the relay coil is energized or de-energized. ⭐ Key Features SPDT (Single Pole Double Throw) relay 12V DC coil Compact Sugar Cube design PCB mounting type 5-pin configuration Coil resistance: approximately 270Ω Nominal coil current: approximately 45mA Suitable for switching AC and DC loads Maximum AC load: 7A @ 250/125V AC Compact and easy to install Suitable for microcontroller and sensor-controlled switching Useful for automation and control applications 📋 Technical Specifications Product Type: PCB Mount Relay Relay Type: SPDT Contact Configuration: 1 Form C Number of Pins: 5 Coil Voltage: 12V DC Trigger Voltage: 12V DC Coil Resistance: 270Ω Trigger / Nominal Coil Current: Approximately 45mA Maximum AC Load Current: 7A @ 250/125V AC Maximum DC Load Current: 10A @ 24/120V DC as specified Operating Time: 10ms Release Time: 5ms Mounting Type: PCB Mount Contact Terminals: COM / NO / NC Coil Terminals: Coil End 1 / Coil End 2 🔌 Pin Configuration Coil End 1: One terminal of the 12V DC relay coil Coil End 2: Other terminal of the 12V DC relay coil COM: Common contact connected to the load circuit NO: Normally Open contact NC: Normally Closed contact When the relay coil is not energized, COM is connected to NC. When the 12V DC coil is energized, the internal contact switches from NC to NO. 🛠️ How It Works Connect the relay coil terminals to a suitable 12V DC control supply. When the coil is energized, the internal contact changes state and switches the connected load between the NC and NO terminals. For an NC connection, the load can remain connected before the relay is triggered. For an NO connection, the load remains disconnected until the relay coil is energized. The relay allows a low-power control circuit such as a microcontroller, sensor, timer, or automation controller to control a higher-current electrical load. 🔧 Applications Microcontroller Projects Arduino Projects Sensor-Controlled Switching Home Automation Security Systems Switching Circuits Motor Control Lighting Control Fan Control PCB Control Boards Embedded Electronics Industrial Control Systems DIY Electronics Projects 📦 Package Includes 1 × 12V PCB Mount Sugar Cube SPDT Relay – 5 Pin ⚠️ Precautions Use a 12V DC supply for the relay coil. Do not exceed the specified contact voltage and current ratings. Ensure correct identification of COM, NO, NC, and coil terminals before wiring. Use suitable protection circuitry when driving the relay coil from sensitive electronic circuits. For inductive loads such as motors and solenoids, use appropriate suppression/protection components. Ensure proper PCB insulation and clearance when switching mains voltage. Disconnect power before changing or modifying wiring. Do not touch exposed mains-voltage terminals during operation. ally Open) then the load remains OFF before trigger. These relays are usually used in home automation, switching circuits, securi