The tachometer can get signal from engine(e.g. tacho sensor, ignition coil, crankshaft position sensor, alternator tacho output etc.). It can process both sine and square signals, and can hook up to any engine via setting up the speed ratio. Details refer to installation instructions.
Room 926, No.11 Lane 225,
Jinxiang Rd.,Pudong District,
Shanghai, China
Hello,may I help you?