4 Way 12V Relay Module is a relay board that you can control it's contacts with 12V via Arduino or another microcontroller board. The relays on the board are relayed by 12V and the board's supply voltage is 12V.
It draws 20mA of current from microcontroller when triggering. It is used frequently in hobby, industrial and robotic projects.
It can relay current up to 10A at 30VDC or 220VAC. The board has control LEDs for each relays.
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