Searon Hour Meter Tach Tachometer for Small Engine Boat Generator Lawn Mower Motorcycle Motocross ATV Snowmobile UTV

NOTICE: This unit has 2 versions : “Normal” Version (Non-replaceable battery) and “Standard” Version (Replaceable battery). This unit works on these gas engines which firing patterns are 1P1R, 2P1R and 1P2R, NOT all gas engines. Digital Tach/Maintenance/Hour Meter Small Engine Boat Generator Lawn Mower Motorcycle Motocross ATV Snowmobile UTV Chainsaw DESCRIPTION This Tach/Maintenance/Hour Meter will keep track of true engine RPM and running time for most of 2/4 Stroke gasoline engines. The unit is powered by an internal CR2450 lithium battery, No external power connections are required. The operation of the Tach/Hour meter is triggered by 5.5 ft. shielded and external lead, wrapped around the spark plug wire of the engine. Since the unit is triggered by the spark of the engine, the hours and the RPM display actual operation. When the engine is on, the display will read the RPM of the engine. When the engine is off, the display will switch to total run time and remains visible. Hours capacity: 999,99 Hours Hours accuracy: 0.1 hour RPM accuracy: 10 RPM RPM refresh rate: 0.5 second Programmable SERVICE time: 9,999.9 hours LCD size: approx. 40*11 MM / 1.57 * 0.43 inch Product size: approx. 80*40*20 MM/3.15*1.57*0.8 inch Operating Battery Life: 4~9 years depending on frequency used Operating temperature: Standard -10°C to +60°C IP Rating: IP65 Turn on/off. Works on: 2 stroke single cylinder / 2 stroke 2 cylinder / 4 stroke 4 cylinder/ 4 stroke 2 cylinder /4 stroke single cylinder Gasoline engines.