Two Channel AC Solid State Relay Arduino Shield

Manufacturer #: 610-0020-100

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Sale price $39.00
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Only 1 unit left


  • Each channel can be controlled by a choice of arduino pins using jumpers
  • Opto-isolated for safety
  • Uses zero-cross opto-triacs for reduced line noise (not suitable for light dimming)
  • PCB foorptint for optional triac snubber

Many MCU applications use electro-mechanical relays to control AC loads. While this is an excellent solution for occasionally turning on/off a load, it is not suited for frequent switching or PWM applications. SSR1/A is an opto-coupled solid state relay that can control two AC loads in a arduino shield form factor.


This is not a toy. Adult supervision is required at all times. High Voltage Parts of this circuit are not isolated from earth ground and contain potentially lethal voltages. Never touch any part of the circuit when powered on. Read the full safety warning before using the board.

Depending on the load current and the ambient temperature a heatsink for the TRIACS (not included) may be required. The TRIACS are in fully isolated packages to make heatsinking simple and safe.

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