4 relay module optocoupler isolation module control board 12V DC12V optional

4 opto isolation module board relay module optional 12V DC12V

Module size: 7cm * 5.3cm

Low level control pull

Can control a variety of household appliances, and high current load

【Features】

  Using a large current relay, AC250V 10A DC30V 10A

  Contact part of the independent wiring, safe and reliable

  Standard interface, you can expand on a variety of development boards

  With fixed screw holes, easy to install

  Applicable to 51 / AVR / AVR / ARM and other platforms

【Products include】

  4 relay extension board

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