Digital Chainsaw Tachometer Small Motor Tachometer For RV Tractor Chainsaw Double Button Description: [Multiple Induction Methods]: The tachometer supports clamping induction and manual gesture induction, the best detection distance is 3cm-5cm/1,18inch-1,97inch. [Measurement of RPM. /min]: speed range: 0-30000 rpm. /min, time range: 0-9999,9 hours [Display screen]: The tachometer uses the display screen, the data is visible at a glance and easy to read. [High Efficiency]: Small motor tachometer, low and low power consumption, has long standby time, is waterproof and shockproof. [Wide Applications]: The digital tachometer is suitable for engines and is suitable for chainsaw, trimmer generator, motorhome, ATV, motocross, boat, tractor, etc. Specification: Product Size: 5,2 cm x 4,66 cm x 1,9 cm / 2,05 inch x 1,83 inch x 0,75 inch Material: ABS Time Range: 0-9999,9H Speed range: 0-30000 rpm Display Built-in Display mode: : Constant voltage 3 V Induction line length: 1m The package contains: Tachometer clip instruction