After 2 minutes of no signal, it will automatically switch to sleep mode to save power and wake up to work when needed. Remove the bracket and open the battery door to replace the battery. 4 BACKLIGHTS—— Default green backlight will help to use it at night or dim place, Red backlight will remind when the engine RPM is higher than the set RPM alarm value.
eBay
Induction Chainsaw Lawn Mower High Tachometer Digital LCD Display Inductive Pulse Tachometer Gasoline Engine Debugging Timer
Aliexpress UK
The recordable rpm range is 0-18000. The previous data can be recovered after replacing new battery. The waterproof grading of the rpm gauge: ip68. GREEN & RED BACKLIGHTS DISPLAY ---- Green backligh mode: always-on, OFF and automatical ; Red backlight will display to remind the RPM exceed warning.
eBay
Tachometer Gauge Inductive Alert RPM Engine Hour Meter Backlit Resettable Tacho Hour Meters for Motorcycle ATV Lawn Mower HM032
Aliexpress UK
2 Stroke Gasoline Engine of 1 Cylinder/ 2 Cylinders/ 3 Cylinders. 4 Stroke Gasoline Engine of 1 Cylinder/ 2 Cylinders/ 3 Cylinders/ 4 Cylinders/ 5 Cylinders/ 6 Cylinders/ 8 Cylinders/ 12 Cylinders/. Display Screen:LCD+GreenBacklight.
eBay
Waterproof LCD Digital Engine Tach Hour Meter Tachometer Gauge Inductive Display For Motorcycle Motor Stroke Engine Marine Car
Aliexpress UK
INSTALLATION ---- Simple mount it by stick-on and screw-on at any proper position;One wire hook-up design for engine signal detection with wire shorten or extend;. JOB is the positive timing. recording and recall engine MAX RPM.
eBay
Inductive Tachometer Gauge Hour Meter Alert RPM EngineBacklit Resettable Tacho Hour Meters for Motorcycle ATV Lawn Mower
Aliexpress UK
RPM Range 0- 25,000,RPMs with 10 RPM accuracy. GREEN & RED BACKLIGHTS DISPLAY ---- Green backligh mode: always-on, OFF and automatical ; Red backlight will display to remind the RPM exceed warning. recording and recall engine MAX RPM.
eBay
Inductive Tachometer Gauge Engine Hour Meter Alert RPM Backlit Resettable Tacho Hour Meters for Motorcycle ATV Lawn Mower HM032B
Aliexpress UK
With a resettable function and easy installation, it’s ideal for keeping your engine in top shape. Resettable Function: Easily reset hours for maintenance intervals or new usage cycles. Inductive Pickup: Simple wire-wrapping installation—no direct power connection needed.
eBay
Inductive Tachometer Gauge Alert RPM Engine Hour Meter Backlit Resettable Tacho Hour Meters for Motorcycle ATV Lawn Mower HM032B
Aliexpress UK
Display Screen:LCD+GreenBacklight. INSTALLATION ---- Simple mount it by stick-on and screw-on at any proper position;One wire hook-up design for engine signal detection with wire shorten or extend;. Product Size:68x18x17(mm).
eBay
Alligator Clip Inductive Digital Hour Tachometer with Clock RPM Counter Inductive Hour Meter Small Engine Tachometer
Aliexpress UK
The recordable rpm range is 0-18000. After 2 minutes of no signal, it will automatically switch to sleep mode to save power and wake up to work when needed. The previous data can be recovered after replacing new battery.
eBay
Inductive Tachometer Gauge Alert RPM Engine Hour Meter Backlit Resettable Tacho Hour Meters for Motorcycle ATV Lawn Mower
Aliexpress UK