1Timing 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, 1H. 2Speed Function: Speed range 0?30000RPM, maximum speed function, the current measured value of the speed value exceeds the historical record, the historical record value will be updated. 3Maintenance Function: The setting range is 0?1000H, 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. 4Sleep 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. 5Wide 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.