Compact Waterproof Engine Hour Meter and Tachometer Keep accurate runtime and RPM records for small engines with a rugged, easy to install hour meter and tachometer. Its sealed ABS housing with epoxy resin encapsulation is waterproof and shockproof, and it tolerates temperatures up to 85 C for long term field use. Key benefits and features Durable construction: ABS shell with epoxy resin encapsulation provides waterproof and shockproof protection for reliable operation in harsh environments. Clear LCD readout: Displays engine hours up to 9999.9 and RPM up to 99999 for precise monitoring. Long standby life: Standby time exceeds 20000 hours and includes a flashing indicator for attention when in standby mode. Battery installation: No internal battery required for basic connection. Simply attach to the spark plug wire and secure the unit with screws or cable ties. Compact and versatile: Miniature size fits tight panels and mounting locations without adding bulk. Wide compatibility: Designed for use on generators, vibrators, shredders, lawn mowers, motorcycles, cars, trucks, snowmobiles, and construction vehicles. Practical use scenarios Generator maintenance tracking: Monitor cumulative runtime on a portable or standby generator to schedule oil changes and preventive service at correct intervals. Lawn care equipment monitoring: Record hours on lawn mowers and shredders to plan blade replacement and engine servicing based on actual use rather than calendar time. Fleet and vehicle oversight: Track engine hours and RPM on motorcycles, cars, trucks, and construction equipment to manage maintenance, detect abnormal usage patterns, and document work time. What makes this unit stand out Simple, tool electrical hookup to the spark plug wire, combined with a sealed, impact resistant enclosure, makes this hour meter suitable for outdoor and industrial applications where reliability and low maintenance are important.