- NInE-ROnG RL-HM011E digital tachometer designed for 2-stroke and 4-stroke gasoline engines - Waterproof surface with IP65 certification, ideal for outdoor use - Resettable total hours and programmable maintenance reminder function - Real-time speed update every 0.5 seconds for greater accuracy - Compatible with lawn mowers, generators, tractors, marine engines, outboards, ATVs, and snowmobiles - RPM range from 0 to 20000 with 10 RPM accuracy - Hour range from 0 to 99999.01 with 1H accuracy - Includes 3 programmable ignition patterns and user RPM shutdown - CE certification ensures quality and safety in operation