The 4 Channel 12V Relay Module can be used to control the lighting, electrical and other equipment. The modular design makes it easy to expand with the Arduino board or other MCU board PIC, ARM and MSP430. The Relay output state by a light-emitting diode.


  • There are four fixed screw holes at each corner of the board, easy for install and fix. The diameter of the hole is 3.1mm 
  •  A high-quality relay is used with single pole double throw, a common terminal, a normally open terminal, and a normally closed terminal 
  • Optical coupling isolation, good anti-interference.
  • Closed at low level with an indicator on, released at high level with indicator off
  •  VCC is a system power source, and JD_VCC is relay power source. Ship 5V relay by default. Plug jumper cap to use
  • 12VDC, 10A/250VAC, 15A 125VAC, 10A 250VAC.

Applications of Four Channel 12V Relay Board:

  •          Electromagnetic relays are employed for the protection of various ac and dc equipments.
  •          The over/under current and voltage protection of various ac and dc equipments.
  •          For differential protection.
  •          Device switching.
  •          Multiple DIY projects.

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Relay Board 4Channel 12V

Relay Board 4Channel 12V

4 channel relay board operates on 12V

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