SainSmart 4-Channel 5V Relay Module for Arduino Raspberry Pi –

Connecting Arduino or Raspberry Pi to a 4 Channel relay module and you will be able to control larger loads and devices like AC lights and appliances.
Connecting Arduino or Raspberry Pi to a 4 Channel relay module and you will be able to control larger loads and devices like AC lights and appliances.

WWZMDiB 1Pcs 5V 4 Channel Relay Module for Arduino

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