Engine Tachometer Maintenance Reminder Hour Meter Digital Red Hour Meter Tachos Multi-color Illuminated Display for Boat Lawn Mower -- Hour Meter Engine Tachometer Maintenance Reminder Digital Hour Meter Tachos Multi-color Illuminated Display for Boat Lawn Mower [Scene Application] - Induction Hour Meter for Maintenance of any 2 or 4 Stroke Gasoline Engine, Maintenance Time(Can Set 1-1000H) and Speed Detection(MAX RPM25000)[Housekeeper Service]---0.6IN large font backlight, red speed warning icon flashes to remind your family that you need to get home safely. Waterproof design, not afraid of light rain, follow you wildly (IP67) [Safety Guarantee] - Anti-seismic backlight timer design can also display smoothly on the pit road and always pay attention to the health of the engine pulse. [Designed for you] - Replaceable battery high capacity (CR2450), data is not lost. Velcro installation, simple press. Damping buttons for easy setup. [After-sale warranty] - Two working systems can choose, backlight is optional Reliable shopping no worries, product problems are unconditionally refunded, 1 year warranty Induction Tachometer Track Oil Change Hour Meter Illuminated Digital Tachometer Hour Meter for 2 or 4 stroke gasoline engine maintenance time and RPM detection, easy to install and use. 2 independent systems, separate backlight, for your choice. Maintenance time setting reminds you to pay attention to the engine condition at regular intervals, so you can repair and change the oil engine and air filter to protect it and extend its life. Can be turned off, backlight can choose three modes, (turn off, frequently turn on, automatic) Induction line length: 47 (inches) 2 service timer functions (SVC) Countdown tracking time, view directly on the screen to remind maintenance such as air filter replacement , programmable, when the maintenance time is reached and the red backlight will be displayed, and the maintenance warning icon will flash to remind JOB timer (JOB) function - used to time a specific task such as oil change The job timer reading shows from 0 to 99,999 hours, Accurate to 0.1 hours, timer can be reset Tachometer display range is 0-25,000 RPM, resolution 10 RPM, tachometer range can be selected, programmable refresh rate: 0.5S/1S. Programmable RPM alarm, red backlit will display flashing warning icon remind that the engine speed is out of range and inform the family that you need to return safely Return to the initial TOT 0.00 interface, long press "SET" for 6 seconds, display DSP-2, enter the second system, blue backlight, 10*2, 10 interfaces *2 kinds of function, perfect for you only Suitable for 2 stroke type engine (1/2/3 cylinders) and 4 stroke type (1/2/3/4/5/ 6/12/16 cylinders) and 6 stroke 2 cylinders