【Working Hours Track】: Keep track of actual running time of your engine(Total and Trip), with ability to program a previous hours for new meter replacement, hours range: 0 to 999,99 hours with 0.1/1 hours resolution. 【Maintence Intervals】: Do the necessary maintenance task for oil changes and other maintenance,help you to know the time of due; maintenance timers range: 0 to 2000 hours. 【Idle Speed Adjustment】: Help to set the correct engine RPM to improve the machine performance;Display the highest RPM hit since the engine started; RPM measurement and alert range: 0 to 25000RPM. 【Installation】: One wire pick-up for the gas engine signal detect,wire length 5.74 ft, it will workable whatever shorten or extend(not exceed 9.84 ft);Easy to mount it by screw-on or stick-on at any proper place. 【Others】: Enging working times record;Built-in repalceable battery CR2032 with long endurance and low battery reminder;Favorable waterproof resistence; Display shutdown for battery energy saved; 2 years guarantee by excellent after-sales and technical group support.