Self Powered Engine Digital Maintenance Reminder Tachometer includes tachometer (RPM), hour meter, service timers (SVC and SVC2), job timer (JOB), programmable max RPM alert, and backlit mode selection. Easy to view data for better engine management. HOUR METER Tracks engine operating hours. When the engine is off, the display shows total run time and remains visible. Total hours (TOT) are non-resettable with 0.1-hour accuracy. Allows user to preset initial total hours to replace an old meter. MAINTENANCE REMINDER Programmable maintenance interval service timers (SVC and SVC2) provide countdown tracking for service reminders. When service time is reached, a warning icon flashes and the backlight turns red. JOB timer measures duration of specific tasks such as oil changes or air filter replacements; the value is resettable. JOB and SVC readings can be viewed directly using dedicated buttons. TACHOMETER Accurately records RPM while the engine is running and helps adjust engine idle speed. Supports programming for different engine firing patterns. Features a programmable RPM alert with red backlight and flashing warning icon. Records and recalls maximum RPM. Offers selectable RPM measurement range modes to improve data accuracy. OTHER FEATURES Easy to install. Includes detailed instructions. Green backlit display with programmable backlight mode. Battery-powered with user-replaceable battery and manual power-off function. Data is retained after power-off. Waterproof rating: IP65. PRODUCT DETAILS Suitable for gasoline engines. Designed with 01/02/03 mode settings to match various engines. Mode 02 is default and suitable for most engines with accurate RPM readings. If RPM reading in mode 02 is half the actual speed, switch to mode 03. If reading is double the actual speed, switch to mode 01. SPECIFICATIONS Name: Backlit Large Screen Digital Engine Tachometer with Clock Alligator Clip Function: Measures speed of gasoline engines RPM Range: 0–18,000 RPM Timing Accuracy: 0.1 hour Timing Range: 0–9999 hours Wire Length: 2200 mm Screen Size: 40 x 22 mm Net Weight / Gross Weight: 76 g / 86 g Housing Material: ABS Refresh Rate: 0.5 seconds RPM Accuracy: ±10 Suitable for: Chainsaws, lawn mowers, boats, motorboats, motorcycles, and similar equipment PACKAGE INCLUDES Tachometer × 1 Alligator clip sensing wire × 1 CR2450 button battery × 1 O-ring × 3 User manual × 1 Bracket × 1 FEATURES Digital Hour Meter Tachometers Motorcycle Tachometers Motorcycle Hour Meter Motorcycle Equipment & Parts Maintenance Reminder Instruments & Gauges Digital Engine Tachometer LCD Hour Meter