Engine Relay Board Hookup Guide-AT89S8253. You can find three primary parts for a engine relay board.

Engine Relay Board Hookup Guide-AT89S8253. You can find three primary parts for a engine relay board. As gear like engines and relays need high present, microcontrollers cannot drive them. To be able to drive them, we require unique present motorists. Motor relay board comes to the photo as a res...