1 CH 5V Active Low Relay Board The 5V 1-channel relay module works with a 5V to 12V TTL control signal. It is perfect for controlling home appliances and for use in microcontroller projects. It can handle a 220V AC load, so you can use it to control motors, LED strips, or other devices. This single-channel relay acts like a regular switch, keeping its contacts separate from the circuit it controls. It has an LED light to show when the relay is ON and accepts input from a 3-5V microcontroller. The output terminals connect to the relay, and there’s a 2x3-pin male header for easy wiring. You can power it with an external 5V source or through the male header. The relay board can handle up to 5A at 240V AC.   Note: It is important that the microcontroller shares ground with the relay board along with other control signals else it will not be able to control the relay.   Also, check the other 5V Relays Collections. Check out our wide variety of Relays including 5V, 12V, and Solid state relay switches.

1 Channel 12V Relay Module with Optocoupler The ADIY 1-Channel Relay Module with Optocoupler operates on a 12V power supply. This module offers bidirectional isolation and enables control of the relay pull through a choice of high or low levels, based on user requirements. It features a genuine high-quality power relay, a subminiature package optocoupler, a high-power high-voltage transistor, and red and blue signal indicators. The module's layout board is thoughtfully designed to ensure comprehensive stability and reliable performance, making it suitable for a wide range of power control applications. The maximum load for the normally open interface is AC 250V/10A and DC 30V/10A. Moreover, it utilizes high-quality ultra-small optocouplers with excellent anti-interference capabilities and stable performance, requiring only a trigger current of 3mA.

1-CH 12V Relay Board This is a small and easy to use 1 channel relay board that operates on 12V. Use it to control one 240V power appliance directly from Arduino, Raspberry Pi, and other microcontrollers or low voltage circuits. Perfect for switching 240V appliances – lights, fans, etc, and even high power motors at lower voltages. The board uses a high-quality relay, which can handle a maximum of 10A/250 V AC or 15A/125V AC. Each relay has all three connections – Common, Normally Open, Normally Closed brought out to 3 pin screw terminals which make it easy to make and remove connections. The board has a power indication and a relay status LED to ease debugging. The board can accept control inputs within a wide range of voltages from 4V to 12V. Power input and relay control signals are brought to header pins on the board. Hence, the board can be easily interfaced with our development boards using our female-to-female jumper wires. Package Includes: 1 x 1-CH 12V Relay Board Specifications: Trigger Current 20mA Switching Voltage AC250V 10A Switching Voltage DC 30V 10A Operating Temperature -40°C to 85°C Opt. Relative Humidity(RH) 20% ～ 85% Storage condition – 65°C to 125°C Dimensions (mm) 48 x 29 x 17 (L x B x H) Weight 15 gm

12 V 1 Channel Relay Board Relay board module is used for controlling higher current loads from your microcontroller development board, pc parallel port or Arduino Uno. This board has one (1) on-board relay which can switch up to 7amps. Relays terminals (c, nc, no) are accessible through screw terminals which makes wiring up the board very easy. The relay is safely driven by transistor bc547 hence your input device, such as Arduino, is protected from relay circuit. There is a freewheeling diode which will further protect your microcontroller from relay kickback. This is a 12v 1-channel relay interface board which can be controlled directly by a wide range of microcontrollers such as Arduino, avr, pic, arm, 8051 and so on. Package Includes: 1 x 12 V 1 Channel Relay Board Specifications Operating Voltage  12V Number of Channels  x 1  Compatibility  Arduino, avr, pic, arm, 8051 and so on Dimensions  5 x 3 x 1cms  Weight  5 grams

12V 1 Channel Relay Module (10Amp) A 12V 1-channel relay module is an electronic module that controls an electrical circuit with an electromagnetic switch. To turn on or off devices that operate at 10A or lower current, it can be controlled by a microcontroller, a switch, or other digital circuits.  This is a small and simple one-channel relay board that runs on 12V. It can be used to directly operate one 240V power appliance from Arduino, Raspberry Pi, and other microcontrollers or low voltage circuits. Ideal for switching 240V appliances such as lights, fans, and so on, as well as high-power motors at lower voltages. A 12V power source, a control circuit, and a relay with a switching capability of 10A are typical components of a relay module. You can use the control circuit to transmit a digital signal (high or low) to the relay, which will then open or close the circuit. Relay modules are widely used in automation and control systems such as home automation, robotics, and industrial control. They are also utilised in automotive applications, such as regulating lighting and other electrical components in a vehicle. Also check 12V 4-Channel Relay Board offered by Iotcart. The relay board is designed to control various appliances and equipment with a large current, and it can be directly controlled by Micro-controllers such as Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, and TTL logic. Package Includes: 1 x 12V 1 Channel Relay Module  Specifications: Trigger Voltage (VDC) 12 Trigger Current (mA) 20 Switching Voltage (VAC) 250@10A Switching Voltage (VDC) 30@10A Operating Temperature (°C) -40 to 85 Opt. Relative Humidity(RH) 20% ～ 85% Storage condition (℃) – 65 to 125 Dimensions 48x29x17mm Weight   15g

12V 2 Channel Relay Board 2 channel 12V relay module Relay outputs: NO: normally open relay interface COM: common interface relays. NC: normally closed relay interface Working voltage 12V High / Low-level changeable Fault-tolerant design, even if the control line is broken, the relay will not operate. Package Includes: 1 x 12V 2CH Relay Board Specifications Operating Voltage  12V Number of Channels  x 2  Dimensions  3 x 2 x 1cms  Weight  5 grams

12V 30A T90 Relay This is a 12V 30A T90 Relay. It operates on a 12V DC signal and max current capacity of 30A. This relay is of T90 type and is an SPDT relay. Hence, it has 3 terminal connections, NO, NC and COM. It has two COM terminals, both of them are short to each other. Package Includes: 1 x 12V 30A T90 Relay Specifications: Coil voltage 12V Contact rating 30A Dimensions(LxWxH) 12.9x9.9x5cm Weight 20gm

12V 4CH Relay Board This is a 12V 4-Channel Relay interface board. It can be used to control various appliances and other equipment with large current. The 4 channel relay board can be controlled directly by Micro-controller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic). This is useful in creating a central hub from where multiple remote loads can be powered. It is useful for tasks like home automation where the module can be placed in the main switchboard and can be connected to loads in other parts of the house and can be controlled from a central location using a microcontroller. read our blog explaining the relay module working principle, which provides detailed information about relay modules, their working principles, and various aspects related to their construction and applications. Applications: Switching mains loads Home automation Battery backup High current load switching Package Includes: 1 x 12V 4CH Relay Board Specifications Operating Voltage  12V  Colour Multicolour  Number of Channels  x 4 Compatibility Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) Dimensions 5 x 3 x 1 cms  Weight  5 grams

12V 8 Channel Relay board This 12V 8 Channel Relay board meets the safety standard as control areas and load areas have the isolation groove. Optical coupling isolation module. The triggering of the 8-Channel Relay Module is reliable and more stable. The double FR4 circuit board design is a 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 a high-voltage relay eliminates the risk of heating up the relay as electromechanical relays limit the current consumption in accordance with a voltage rating. Also, read our blog on What is Relay in Electrical explaining what is it, how does it works, its construction, different types of relays, and applications. APPLICATIONS: Control Solenoids Motors Bulbs and Lamp smart home control Freewheeling diode to protect your microcontroller. Also check 12V 16 Channel Relay Module with Light Coupling LM2576 Power Supply, suitable for controlling various appliances and equipment with a large current. It can be directly controlled by microcontrollers such as Arduino, 8051, AVR, PIC, DSP, ARM, MSP430, and TTL logic. Each relay on the board requires 15-20mA Driver Current, and there is an indication LED for Relay output status. The module features light coupling protection (optocoupler) for the isolation of control circuitry. Package includes: 1 x 12V 8 Channel Relay board Specifications: Channel 8 Operating Voltage (VDC) 12 Trigger Voltage (VDC) 5 Switching Voltage (VAC) 250@10A Switching Voltage (VDC) 30@10A PCB hole diameter (mm) 3.1 PCB hole pitch distance (mm)             132 mm (x-pitch), 50.5 mm (y-pitch) Dimensions 138x57x17mm Weight 50g

12V Relay Cube This is a 12V Relay Cube. This cube relay has an operating voltage of 12V and has a max current capacity of 7A. This makes it most suitable for use in microcontroller-based devices. It is an SPDT Relay. Relays are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal.  APPLICATIONS: Control Solenoids Motors Bulbs and Lamp Home Automation Projects Freewheeling diode to protect your microcontroller Also check 12V 1 Channel Relay Module with a 10A switching capability. It is an electronic module designed to control an electrical circuit using an electromagnetic switch. Package includes: 1 x 12V Relay Cube Specifications: Voltage 12V DC NC Contact Rating 7A @ 250V NO Contact Rating 12A @ 120V Number Of Pins 5 Current 10A Weight 10g