1、Smart Testing: with 10-9999RPM wide measuring range as well as high testing accuracy, the motor tachometer is very useful. 2、Clear Display: Digital display of 4 digit red LED enables a clear viewing on the real time data, simplifying the operation. 3、Reliable Work: IP68 waterproof grade allows for stable working performance under various environments, also has Hall sensor. 4、Practical Use: Allows for wide application on ship, mechanical equipment, wind power machine, outdoor equipment, lathe, etc. 5、Easy to Install: Designed to have a light weight and a compact size, the installation can be quickly completed in minutes. Item Type: Motor TachometerWorking Voltage: DC 8V-24VDisplay Refreshing Rate: >3 times/secondDisplay Mode: Red LED, 4 digits. Over Range Display: Below the measurement range, display LLLL. Beyond the measurement range, display HHHH. Measuring Range: 10-9999Measurement Accuracy: ±0.1%, reading ±1 word. Waterproof Grade: IP68 .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; } 1 x Motor Tachometer1 x Hall Sensor1 x Accessory