Digital Back-light Multi-function Tach/Hour meter. HM-R035 works on any 2 or 4 stroke gas engine, up to 8 cylinders. It has a powerful timing system and RPM measuring system. Timing System: accumulates total running hours TOT, records partial running time JOB, maintenance timer can be set freely to 0-200 hours SVC. RPM Measuring System: measuring current engine RPM, recording and viewing engine MAX RPM, and setting overspeed warning function. Refresh rate can be set 0.5S or 1S. HM-R035 is easily installed, replaceable CR2032 battery, data is stored automatically after replacing the battery, green back-light, large LCD design, waterproof Rate IP65. User Manual Product Size 67.1mm*35mm*17.6mm Display Screen LCD + Green Backlight Screen Size 40.9mm*16.9mm Button Type Touch Switch Refresh Rate 0.5S/1S Hour Range 0-99999H Partial Time Range 0-99999H RPM Range 0-20000RPM RPM Alert Setting 1000-20000RPM Housing Material ABS Package Double Blister Card Packing Size 190mm*113mm*25mm N.W. 100g Waterproof Rate IP65 Induction Wire 1.5M Length, Battery Specification CR2032 210mAH Timing Precision 0.1H Maintenance Timer 0-200H RPM Accuracy 10RPM Battery Can be replaced
