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Electronics, sensors, robotics kits, PC components, peripherals — everything Unik Systems carries, in one place.
Only 1 leftPlay Mex
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.
Out of stockShure MV7 Hybrid USB/XLR Dynamic Mic
Broadcast-quality dynamic with both USB and XLR. Voice Isolation Technology.
Antec CX800 ARGB Black Panoramic Mid Tower Case
[PC Case] Antec CX800 ARGB Panoramic Dual Chamber Mid Tower PC Case Panoramic 270° viewing angle with 4mm seamless tempered glass panels. Features vertical cooling layout with up to 9 fan mounts and pre-installed 6x 120mm fixed-mode RGB fans. ⭐ Key Features - Panoramic 270° tempered glass front and side - Pre-installed with 6x 120mm RGB fans - Dual-chamber layout for optimal thermal isolation - Supports up to 360mm radiator on top 📋 Technical Specifications - Dimensions: 435 x 290 x 395 mm - Motherboard: ATX, Micro-ATX, ITX - Max GPU Length: 415 mm 📦 Package Includes - 1 x Antec CX800 ARGB Black Chassis - 6 x 120mm RGB Fans
Antec Constellation C8 Aluminum White E-ATX Full Tower Case
[PC Case] Antec Constellation C8 Aluminum White Edition Full Tower Case Stunning pristine white aluminum trim edition with full panoramic glass and dual chamber internal isolation. ⭐ Key Features - Premium brushed aluminum white accents - Seamless tempered glass panels - Dual chamber thermal design - Accommodates RTX 4090 / 5090 cards up to 440mm length 📦 Package Includes - 1 x Antec C8 Aluminum White Case
HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module Isolated SMPS PCB Mount
[AC DC Power Supply Module] The HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module is a compact isolated switching power supply designed for converting high-voltage AC input into a stable 5V DC output. It is widely used in embedded systems, automation projects, smart home devices, and industrial electronics. Unlike traditional transformer-based power supplies, this module integrates advanced switching power technology into a compact PCB-mount design. As a result, it offers high efficiency, low heat generation, and reliable long-term performance. In addition, the module supports a wide input voltage range from 90V AC to 264V AC, making it suitable for global power standards. Furthermore, the isolated design improves safety and helps protect connected electronic circuits. The HLK-5M05 includes built-in short-circuit, overload, and overcurrent protection, ensuring safe and stable operation. Moreover, its low ripple and low noise output make it suitable for sensitive electronic devices and microcontroller circuits. Because of its ultra-compact size and PCB mounting capability, the module is easy to integrate into custom electronic products and DIY projects. Therefore, it is commonly used in IoT systems, smart switches, automation controllers, industrial instruments, and communication equipment. 🔹 Key Features Stable 5V DC output 5W isolated switching power supply Wide AC input voltage support Compact PCB mount design Low ripple and low noise output Built-in overload and short-circuit protection High efficiency and reliability UL and CE compliant design Low no-load power consumption Suitable for industrial and DIY applications 🔹 Technical Specifications Model: HLK-5M05 Product Type: AC to DC Switching Power Supply Module Input Voltage: 90V – 264V AC Rated Input Voltage: 100V – 240V AC Output Voltage: 5V DC Output Power: 5W Maximum Output Current: 1000mA Short-Term Peak Current: ≥1200mA Input Frequency: 50/60Hz Maximum Input Current: ≤0.2A Efficiency at 220V AC: ≥70% Efficiency at 110V AC: ≥69% Ripple & Noise: ≤70mVp-p Voltage Regulation: ±0.2% Load Regulation: ±0.5% Isolation Type: High Isolation Cooling Method: Natural Air Cooling Working Temperature: -20°C to +60°C Storage Temperature: -40°C to +80°C Relative Humidity: 5% – 95% RH Mounting Type: PCB Mount Safety Protection: Overload & Short-Circuit Protection 🔹 Applications This AC to DC module is suitable for many electronic and industrial applications, including: Smart home systems IoT devices Automation controllers Industrial control systems Communication equipment DIY electronics projects Embedded systems Power supply circuits 🔹 Package Includes 1 × HLK-5M05 Hi-Link 5V 5W AC to DC Power Supply Module
Kapton 25mm x 33m High Temperature Resistant Tape
[Kapton Tapes] Kapton tape is a polyimide film first developed by DuPont in the 1960s. It remains stable at an extremely wide range of temperatures from -269˚C to 260˚C and has been an industry-standard due to its excellent electrical, thermal, chemical and mechanical properties. This enables the film to withstand extreme temperatures, vibration, and other demanding environments. This Kapton 50mm x 33m High-Temperature Resistant Tape for 3D Printers is a polyester film tape with a high-temperature resistant adhesive. Primarily used to hold transfer sheets in place while sublimating onto a variety of items and hold the polymer plate on the heating platen in the hot foil stamping. Excellent heat & solvent resistance. Minimal shrinkage after baking and clean removal. Due to Kapton tape’s large range of temperature stability and electrical isolation ability, it is used during the manufacturing and final assembly of electronic components. It acts as a protective layer that isolates and prevents the electrostatic discharge of sensitive components, also protecting and restraining components during high temp applications and reflow soldering procedures. ABS and Kapton adhere extremely well to one another, making Kapton tape a perfect 3D printing bed surface layer. It is usually applied to a glass or aluminum bed surface, where extruded ABS filament adheres to the surface. Specification and Features: Material: Polyimide Spindle Type: Roll Tape Length: 33m TapeWidth: 25mm Colour: Metallic Brown Temperature Range: 200ºC High-quality product from a well-known brand Package Includes: 1 x Kapton 25mm x 33m High-Temperature Resistant Tape for 3D Printers Note: Product Images are shown for illustrative purposes only and may differ from the actual product
1-Channel 5V Relay Module for Arduino
[Relays] This is 1 Channel 5V Relay Board Module For Arduino PIC AVR DSP ARM. A wide range of microcontrollers such as Arduino, AVR, PIC, ARM and so on can control it. Each one needs 15mA – 20mA driver current and Equipped with high current relay: DC 5V / 10A, AC 250V / 10A Standard interface that can be compatible with microcontroller. Specification and Features :- 1 channel 5v relay board Operating Voltage : 5V Max Current : 20mA Relay Contact Current Capacity at AC250V: 10A Relay Contact Current Capacity at DC5V: 10A One normally closed contact and one normally open contact Triode drive, increasing relay coil High impedance controller pin Pull-down circuit for avoidance of malfunction Power supply indicator lamp Control indicator lamp Indicator for Relay output status Can Be controlled various appliances & other Equipment With Large current. Standard TTL Level logic controlled (AVR, Arduino, 8051, PIC, ARM) The module is compliant with international safety standards, control and load areas isolation trenches; * Product Images are shown for illustrative purposes only and may differ from actual product.
2 Channel 5V Relay Module with Optocoupler
[Relays] This is a 5V, 10A 2-Channel Relay interface board. It can be used to control various appliances, and other equipments with large current. It can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). It has a 1×4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays. The pins are marked on the PCB:- GND – Connect 0V to this pin. IN1 – Controls relay 1, active Low Relay will turn on when this input goes below about 2.0V IN2 – Controls relay 2, active Low Relay will turn on when this input goes below about 2.0V VCC – Connect 5V to this pin. Is used to power the opto couplers Specification:- High current relay, AC250V 10A, DC5V 10A 2 LEDs to indicate when relays are on Works with logic level signals from 3.3V or 5V devices Opto isolation circuitry * Product Images are shown for illustrative purposes only and may differ from actual product.
Out of stockMale DC Power Heavy Connectors for CCTV Surveillance Camera
[Power Connector] Upgraded 18 AWG well- constructed flexible power pigtails provide a simple and secure DIY solution for DC power connectivity, work with a power adapter or a power box Suitable for all DC power supply voltages 0-24V, especially for for Home Security Camera Surveillance System and other 2.1mm x 5.5mm DC power application, Compatible with All CCTV systems, LED Strip Lights and Other DC Power Devices Upgraded heavy-duty quality connectors with fine copper wires and elastic soft PVC isolation brings the reliable and secure connection 100% brand new high-quality DC power Pigtail connector. All products undergo strict quality testing before leaving the factory to ensure that the quality of the product is qualified. Please rest assured to purchase and use. 10 piece of male cable adapter, plug specifications: plug 5.5mm x 2.1mm, male head: outer diameter 5.5mm, inner diameter 2.1mm; two conductor wires; connector polarity: internal positive(center) +; external negative
Out of stockHi Link HLK 5M05 5V/5W Switch Power Supply Module
[Power Supply] HLK-5M05 5V/5W Switch Power Supply Module is plastic enclosed PCB mounted isolated switching step-down power supply module. It can supply 5V DC from 120V AC – 230V AC and has a power rating of 5 Watt. This makes it perfect for small projects that need a 5 volt supply from mains. This power supply module replaces lots of parts from the traditional power supply like diodes, voltage regulator and transformers. Therefore there are many advantages for these modules, such as low-temperature rise, low power, high efficiency, high reliability, high-security isolation etc. This Power Supply Module voltage source is a switching source, so you do not have to worry about fluctuations in voltage grid. It is designed to be mounted on the PCB and is the ideal solution to power pads that you take. It is widely used in a smart home, automation and control, communication equipment, instrumentation and other industries. Features: Meet UL, CE requirements, Ultra-thin, ultra-small All voltage input (AC: 90 ~ 264V) Low ripple and low noise Output overload and short circuit protection High efficiency, high power density The product is designed to meet the requirements of EMC and Safety Test Low power consumption, environmental protection, no-load loss <0.1W Environmental conditions: Technical indicators: Single bit Working temperature: – 20-60 +degree Storage temperature: + 80-40 -degree Relative humidity: 5-95% The cooling way: Natural cooling The atmospheric pressure: 80-106Kpa The altitude: 2000M or less. Package Includes: 1 x HLK-5M05 5V/5W Switch Power Supply Module
Out of stockPC817 EL817 SMD-4 Optocoupler Transistor Output
[Semiconductor ICs] PC817 Opto-Coupler is used to provide electrical isolation between two circuits, one part of the circuit is connected to the IR LED and the other to Photo-transistor. It has a wide range of applications such as noise suppression in switching circuits, I/O isolation for MCUs, etc. Features: IC Number: PC817 SMD Packaging. Number of channels: 1 channel Package Includes: 1 x PC817 EL817 SMD-4 Optocoupler Transistor Output.
MPU-6050 3-Axis Accelerometer and Gyro Sensor
[Accelerometer and Gyro Sensor] The MPU-6050 3-Axis Accelerometer and Gyro Sensor module use MPU-6050 which is a little piece of motion processing tech. The MPU6050 datasheet is available in the attachment section to get this visit. There are different types of magnetometer are available the basic differences between MPU6000, MPU6050 and MPU6500 is: MPU6000 MPU6050 MPU6500 1. A sampling rate of 8 kHz. 1. A sampling rate of 8 kHz. 1. A sampling rate of 32 kHz. 2. Supports SPI and I2C interface. But I2C is too slow to handle 8 kHz gyro update. 2. Supports I2C interface communication protocol. 2. Supports both I2C and SPI interface. 3. Vibration Sensitivity is better than MPU6500. 3. Vibration Sensitivity is better than MPU6500 but the speed of operation is less than MPU6000. 3. It is more susceptible to vibrations, so the need for some vibration isolation methods. It is faster than both MPU. The MPU6050 devices combine a 3-axis gyroscope and a 3-axis accelerometer on the same silicon together with an onboard Digital Motion Processor (DMP) capable of processing complex 9-axis MotionFusion algorithms. To get more insights about specifications visit the MPU6050 datasheet. If you want to Explore more about Accelerometer Then click on, Accelerometer and Gyroscope Features : Chip built-in 16bit AD converter, 16-bit data output. I2C Digital-output of 6 or 9-axis MotionFusion data in rotation matrix, quaternion, Euler Angle, or raw data format. Selectable Solder Jumpers on CLK, FSYNC, and AD0. Digital Motion Processing™ (DMP™) engine offloads complex MotionFusion, sensor timing synchronization, and gesture detection. Embedded algorithms for run-time bias and compass calibration. No user intervention is required. Digital-output temperature sensor. Package Includes: 1 x MPU-6050 Gyro Sensor 2 + Accelerometer. 1 x 1*8 Burg connector Pins(Right angle). 1x 1*8 Burg connector Pins(Straight).
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
Out of stock5V 6 Channel Low Level Relay Module with Light Coupling
[Relay Module] It is a 5V 6 Channel Low-Level Relay Module with Light Coupling. The relay normally open interface maximum load: AC 250V/10A, DC 30V/10A. With optocoupler isolation, strong drive capability, stable performance; trigger current 5mA, module working voltage: DC 5V. Each channel of the module can be triggered by a jumper to set a high level or a low level. Fault-tolerant design, even if the control line is disconnected, the relay will not move. With status indicator: power (green), 6-channel relay status indicator (red). All module size interfaces can be directly connected through the terminal block, which is convenient and practical. Features: 6-way relay output module contact capacity is 10A 250V. input IN1, IN2, IN3, IN4, IN5, IN6 signal, a low level is effective. Using single-chip design, reliable performance, strong anti-interference, no false triggering, superior performance. The trigger terminal has optocoupler isolation, the independent external power supply can trigger completely isolated. Each relay has an activity indicator light. With 4 fixed bolt holes, easy installation. Support all SCM control. It is applicable to the industrial sector, PLC control and home intelligent control. Package Includes: 1 x 5V 6 Channel Low-Level Relay Module with Light Coupling.
5V 10A PCB Mount Relay SPDT 5 Pin Electromechanical Relay for DIY Electronics
[Relays] Description: The 5V DC Relay Coil 10A SPDT Relay is a high-quality electromagnetic relay designed for reliable AC and DC load switching applications. It operates using a 5V DC coil voltage, making it suitable for Arduino boards, microcontrollers, IoT devices, and automation circuits. In addition, the relay supports switching loads up to 10A, allowing users to control high-power devices safely using low-voltage control signals. As a result, it is widely used in home automation systems, robotics projects, smart switching circuits, and industrial electronics. Because of its SPDT (Single Pole Double Throw) contact configuration, the relay can switch between Normally Open (NO) and Normally Closed (NC) outputs. Furthermore, the through-hole PCB mounting design allows easy installation on circuit boards and custom electronic projects. The relay supports both AC and DC load switching, including 250V AC at 10A and 30V DC at 10A. Moreover, the sealed plastic housing provides high isolation between the coil and contacts, improving safety and durability. This relay is commonly used for controlling lights, fans, motors, pumps, appliances, and power control systems in DIY as well as industrial applications. 🔹 Key Features 5V DC electromagnetic relay SPDT contact configuration (COM, NO, NC) Supports AC and DC load switching High current handling up to 10A Through-hole PCB mounting design High isolation between coil and contacts Long mechanical and electrical life Suitable for Arduino and automation projects 🔹 Technical Specifications Product Type: Electromagnetic Relay Coil Voltage: 5V DC Contact Rating: 10A Rated Load: 250V AC @ 10A (50/60Hz) Rated Load: 30V DC @ 10A Contact Type: SPDT (COM, NO, NC) Frequency: 50 / 60 Hz Coil Resistance: Approx. 70–100Ω Mounting Type: Through-Hole PCB Mount Isolation: High Isolation Between Coil & Contacts Switching Life: Long Mechanical & Electrical Life 🔹 Applications This relay is suitable for many electronic and electrical applications, including: Arduino projects Home automation systems Industrial automation Robotics projects Smart switching systems Motor and pump control Power supply circuits DIY electronics projects 🔹 Package Includes 1 × 5V 10A PCB Mount Relay 5 Pin
Out of stockPrecision 5V 700mA (3.5W) Isolation Power Supply Module AC-DC Step- Down Module 220V to 5V
[Step Down Buck Converter] This is a 5V 700mA power supply module . Which can be used to power any DIY projects that can be operated via 5VDC. The module has a power rating of 3.5W. Features: Ultra-thin and ultra-small size Supply Voltage: 220VAC Low ripple and low noise Output overload and short circuit protection High efficiency High power density The product is designed to meet the requirements of the EMC and Safety Test Low power consumption Environmental protection Meets UL and CE requirement Package Includes: 1 x Precision 5V 700mA (3.5W) Isolation Power Supply Module AC-DC Step- Down Module 220V to 5V