Track the service life of your vehicle - oil changes, valve, adjustment, spark plugs, etc. Easy installation peel and stick no wiring necessary.
No battery required connects to spark plug wire. Works any gas engine. Records and displays to 9,999.9 hours. Hour glass symbol appears and flashes on/off to indicate counting time. Automatic roll over. Resolution 0.1 hour. 100% Epoxy encapsulated casing resists water.