Display engine tachometer when working, and display engine working time when stopped.

         (Can be made to display engine working time only)

         With 3V battery inside

         Just wrap the red sensor wire around the ignition lead wire and black earth wire connected to the metal chassis.

         Can be used in different types of engines

          With small size Easy for installation

          Excellent waterproof, anti-vibration, noise immunity performance

          Wide working temperature range: -20℃~80℃