Special Features:Hour Meter/TachometerItem Diameter:3.7cmItem Weight:108gItem Height:1.3cmItem Width:3.7cmItem Length:7.5cmExternal Testing Certification:ceModel Name:RL-HM035ABrand Name:FoundownOrigin:Mainland ChinaMaterial:ABSMain functions:RPM, timing, temperature, clock...RPM:Range 0-25000RPM. Overspeed alarm reminder, settable.The product mtaches one TS002-PT100-14MM-Straight temperature sensor. And there is an Electronic Russian instructions for the product. Please tell me your email if you need it . Thanks ENGINE TEMP MONITOR---- This product can measure the small engine temperature,sensor range: -20 to +300(-4 to +572),the unit can be switched;over temperature alert;reset max temp.Temp sensor aperture(14mm(0.55inches)). MUITIFUNCTION HOUR METERS---- You can set up the initial value to replace an old device;TOT and the partial timer(JOB) range are the same:0-99999 H,0.1/1H accuracy,and the JOB can be reset;selectable maintenance reminder(5-1000H/OFF). TACH HOUR METER---- 9 Programmable engine firing patterns is to monitor accurately;RPM range:0-25000 RPM;Reset max RPM;Alert overspeed. MULTI-SCREEN DISPLAY---- Multiple interfaces can be displayed at the same time for easy reading of clock, RPM, timer, temperature and other functions. OTHERS---- 3 Installation methods;Backlight display;repalceable battery CR2032 with long endurance;Waterproof rate:IP67; User shutdown; Record engine work times. AFTER SALES---- 2 years after-sales and technical group support.If you have any technical or product problems, please feel free to contact our back office staff for assistance. Product Description HM035A Digital RPM Tach Hour Meter Temperature Gauge for Lawn Tractor Compressor Generator Snowmobile Marine Jet Ski Pit Bike It is a multi-function hour meter,it has temperature guage meter,hours and tachometer.In addition,temp function can record real-time temp and max temp(can be reset),alert overtemperature,temp unit can be switched;hour meter can record TOT,resettable partial timer,countdown maintenance value;tachometer can record real-time rpm,max rpm(can be reset),alert overspeed;backlight display;user shutdown;record the times of engine working;replacement battery reminder;waterproof rate:IP67.Suitable for small gasoline engine,such as scooter,mini bike,garden tractor,snowmobile,dump truck,motorcycle and etc. Hours Keep track of engine total run time(TOT) , it is non-resettable and back to 0 when exceed 99999H. Record the partial working time(JOB), it is resettable. Perform the necessary maintenance task(SVC) such as oil/air change, remind the due time. TOT&JOB time range: 0-99999 H. SVC range:5-1000 H.It can be turn off. RPM Monitor and display the current RPM value when engine is on. Display the highest RPM hit since the engine started. Adjust the idle revolution by different engine firing patterns. RPM range: 0-25000RPM Maximum RPM warning. Suitable for gas engine: 2 stroke 1 cylinder/2 stroke 2 cylinder/2 stroke 3 cylinder 4 stroke 1 cylinder/4 stroke 2 cylinder/4 stroke 3 cylinder/4 stroke 4 cylinder/4 stroke 5 cylinder/4 stroke 6 cylinder/4 stroke 8 cylinder/4 stroke 12 cylinder/4 stroke 16 cylinder 6 stroke 2 cylinder Note: Some 4 stroke 1 cylinder with same engine firing pattern as 2 stroke 1 cylinder, the setup is 1P1R. 4 stroke installation,wrap pickup wire around head of coil;2 stroke installation,wrap pickup wire around spark plug head. 1.Thermometer Function: Alert the temperature value exceed with red backlight display. Temperature measurement range: -20 to +300(-4 to +572),the unit can be switched or freely. The maximum temperature value can be reset. Installation Method 3 kinds of installation methods:velcro installation;screw installation;aluminum bracket installation(accessories not included). 3 Backlight choice:Auto/ON/OFF. LCD display can be shut down,then wake up at any time. EASY TO INSTALL Application This hour meter suitable for Outdoor Power Equipment,Vehicles,Generators,Agriculture,Boats,Construction Machinery etc... such as:Lawn Mower Garden Tractor Riding mower Leaf Blower Pressure washer chainsaw Snowblower Brush Mower Line Trimmer string trimmer Pressure Washer Portable inverter generator Motorcycle Dirtbike ATV UTV Scooter Paramotor Harley dual-sport bike Golf cart Outboard Jetski Pontoon boat Mercury Raceboat Hovercraft etc...This hour meter suitable for Outdoor Power Equipment,Generators,Agriculture,Construction Machinery,Vehicles,Boats etc... such as:Lawn Mower Garden Tractor Riding mower Leaf Blower Pressure washer chainsaw Snowblower Brush Mower Line Trimmer string trimmer Pressure Washer Portable inverter generator Motorcycle Dirtbike UTV ATV Scooter Paramotor Harley dual-sport bike Golf cart Outboard Jetski Pontoon boat Mercury Raceboat Hovercraft etc... has its o