Item Type: Motor TachometerMaterial: ABSDC Power Supply: DC8-24V 40mADisplay Mode: LCD screen display, four digit readingMeasuring Range: 10 to 9999Measurement Accuracy: 0.1%, reading 1 wordDisplay Refresh Rate: Greater than 3 times/secondOver Range Display: if the speed is too low, "LLLL" will be displayed; The speed is too high, "HHHHPanel Opening Size: Approx. 68 x 33mm / 2.68 x 1.3in Hall Sensor:Voltage: DC6-36VNPN: Normally openMeasuring Distance: Approx. 10mm / 0.39in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Anti Interference: This digital display tachometer is equipped with anti interference Hall sensor, which makes the measurement more accurate. 210 to 9999: This tachometer has a measurement range from 10 to 9999, and 0.1% accuracy, pay attention to the range for better using experience! 3Wide Application: This tachometer can be used for lathe, CNC, mower, spring, etc. To measure different motor speeds. 4LCD Display: Comes with a LCD display, you can see the data accurately and instantly, very helpful tool to your work! 5Easy to Install: Comes with a compact size and a light weight as well, the easy installation can be quickly completed.