Tach Hour Meter LCD Display Round High Accuracy RPM Hour Gauge for Motorcycle ATV Outboard Generator Lawn Mower Item Type: Tach Hour Meter Material: ABS Display Mode: LCD Speed Range: 0-25000RPM Timing Range: 0-99999H Maximum Speed: 10RPM Timing Accuracy: 0.1H/1H Battery: One CR2050 410mAh (built in) Waterproof Grade: IP68 Scope of Application: Motorcycles, ATVs, outboard motors, generators, lawn mowers, chainsaws, air compressor, road machinery and equipment. Timing system 1. Record the total working time of the engine When the product detects a signal continuously for 1 second, start to count, and the hourglass flashes 2. When the product continues to work for 6 minutes, the display data is 0.1 hour 3. The timing mode is positive timing, the initial timing value is 0, and the maximum timing value is 99999 hours. 4. When the total operating hour is in the range of 0-9999.9H, the resolution hour is 0.1H Speed system 1. RPM test: When the product continuously detects the 1s signal, it will display the current RPM. The test range is 0-25000RPM. 2. Maximum speed view: When the engine stops working, the speed timer LCD flashes for 5 seconds, and the maximum speed is displayed at this time. To fix the product, put the product into the installation hole, and fix the product with the snap joint.