HM038AD Digital Supply Counter Maintenance Hour Meter Settable Initial timer compatible for ACDC 5-277V Various of Lawn Mower Tractor Generator Applicable Voltage---- Working voltage range: AC/DC 5V to 277V, suitable compatible for most AC/DC small powered machine with voltage: 12V,24V,36V,48V,72V,110V,120V,220V,230V etc. Usage & Maintenance---- Keep track of run time up to 999,99 hours; Ability to program the initial hours compatible for replacement; Percompatible for m the regular maintenance at recommended intervals by 2 single channelsTMR1/TMR2. Mounting & Signal Detect---- Snap-in design compatible for standard panel cut-out size: Approx.0.123x0.08 feet37.5x24.5mm;Product positive and negative poles are nondistinctive compatible for easy and smooth working connection. Water & Shock Resistance---- Display with PC transparent board and 100% epoxy resin sealing craft can keep it away from the damp or moist, which also prevent the strong shock between transport or cleaning.Waterproof is up to IP68. Others---- Built-in CR2050 battery compatible for date retained when power-off; Well-equipped product accessories; Service and support compatible for after-sales and technical group 2 years. Product Description HM038AD Digital Supply Counter Maintenance Hour Meter Settable Initial timer compatible for ACDC 5-277V Various of Lawn Mower Tractor Generator AC/DC 5-277V Hour Meter Multifunction meter Easy to read Easy operation Initial setting Partial timer Range is as the same as TOT:0-99999H,0.1/1H accuracy. TMR1/TMR2 can reset. Product Features: Total hours Hours read up to 99,999 hours with 0.1/1 hour accuracy. Monitor the time of engine working when power is on, it is non-resettable. Data storage:The engine stops working, the TOT is saved, and the next time the time is accumulated directly. Settable Initial timer Initial hours can be set within 1 hour becompatible for e engine working. You can use in new meter replacement to record the old data in advance. Snap-in mounting Snap-in design compatible for standard panel cut-out size: Approx.0.123x0.08 feet37.5x24.5mm. Signal connection Does not distinguish between positive and negative pins. Waterproof 100% epoxy resin seal, waterproof rate to IP68. Application ATV Leaf blower Motorcycle