Feature:1. Timing Function: When the sensor probe detects the rotation signal of the rotating shaft for 1S continuously, the meter displays the speed and starts timing, timing accuracy: 0.09999H59Min, 1M; 10000999999H, 1H.2. Speed Function: Speed range 030000RPM, maximum speed function, the current measured value of the speed value exceeds the historical record, the historical record value will be updated.3. Maintenance Function: The setting range is 01000H, the default value is 0, which means that the maintenance timing function is turned off. When the countdown reaches 0, the main interface SVC and NOM flash alternately to remind.4. Sleep Function: Long press the button on the main interface for 2S, after 1S, OFF will be displayed, and the product will be turned off; after that, it can be woken up by short pressing the button or continuously detecting the rotating shaft signal.5. Wide Application: Widely used in garden machinery such as lawn mowers, chainsaws, etc.; road machinery such as tampers; marine industry such as jet skis, outboard motors, etc.; off road vehicles, snowmobiles, etc.; portable generators and other equipment with rotating shafts.Specification:Item Type: Tach Hour MeterMaterial: ABSInduction Wire Specification: UL2464-26AWG/3C Black Wire Length: Approx. 1.2m/47.24inTiming Range: 0-999999HMaintenance Range: 0-1000HRotational Speed Range: 0-30000RPMBattery: 1 x button cell CR2450 3V 540mah (included)Function Introduction:1. Timing function: When the sensor probe detects the rotation signal of the rotating shaft for 1S continuously, the meter displays the speed and starts timing, timing accuracy: 0.0-9999H59Min, 1M; 10000-999999H, 1HWhen the timer exceeds 999999H, the timer will restart from 0.0Record the total working time (range 0-999999H), the timing cannot be resetRecord the single timing of two groups of JOB1/JOB2 (range 0-999999H), the timing can be reset to zero2. Speed functionAfter the sensor probe detects the rotation signal of the rotating shaft for 1S continuously, the meter displays the speed and starts timingRotation speed range: 0-30000RPMMaximum rotation speed function: When the rotation speed value of the current measured value exceeds the historical record, the historical record value will be updated3. Maintenance functionThe setting range is 0-1000H, the default value is 0, which means that the maintenance timing function is turned offWhen the countdown reaches 0, the main interface SVC and NOM flash alternately to remind4. Sleep functionLong press the button on the main interface for 2S, after 1S, OFF will be displayed, and the product will be turned off; after that, it can be woken up by short pressing the button or continuously detecting the rotating shaft signal.Application Range:Widely used in hand push lawn mowers, riding lawn mowers, chain saws and other garden machinery; rammers and other road machinery; water motorcycles, outboard motors and other marine industries; motorcycles, off road vehicles, ATVs, snow Vehicle industries such as cars; portable generators, RV generators and other generator industries; powered paragliders and other sports equipment; branch chippers, weeders, seeders and other agricultural machinery; and other equipment with rotating shafts..Package List:1 x Tach Hour Meter1 x Manual2 x Screw1 x Button Battery2 x Tie