UNI T Non-Contact RPM Meter Tachometer UT372 enables the user to carry out quick and easy measurements of RPM without the need to connect the meter directly to the targeted application. The UT-372 handheld tachometer can actually measure RPM in four different ranges from 10-99RPM, 100-999RPM, 1000-9999RPM and 10000RPM-99999RPM. From this RPM meter, you've always got the right range necessary for whatever is being tested and can adjust it as necessary for faster moving or slowing moving objects. This non-contact type tachometer can also be used as a revolution counter and can count revolutions from 0 up to 99999. Features: Measurements of RPM with no contact Recommended measurement distance of 50mm to 200mm MAX/MIN/AVG functions Data hold function Four measurement ranges: 10-99RPM; 100-999RPM; 1000-9999RPM and 10000RPM-99999RPM Revolution counter function with a range of 0 to 99999 Auto shut down when left idle Low battery indicator USB interface Specifications: RPM Range: 10 RPM ~ 99 rpm ± (0.03%), 100 rpm ~ 999 RPM ± (0.04% + 2), 1000 rpm ~ 9999 rpm ± (0.04% + 2), 10000 rpm ~ 99999 rpm ± (0.04% + 2) Accounts range: 0 ~ 99999 Accounts input frequency: 10 kHz, bandwidth: 5% Target distance: 50mm ~ 200mm Screen count: Yes Data retention: Yes Auto power off Around 15 minutes Low battery indication: ≤4. 8 V Max mode: Yes Min mode: Yes AVG mode: Yes USB interface: Yes Power: 1.5 V alkaline batteries (LR6) x 4 (Not included) LCD size: 53mm x 41mm Colour of the product: Red and grey Net weight of the product: 100g Product size: 184mm x 56mm x 34mm Uses Measuring motor and machine shaft speed Checking fan and rotor RPM in maintenance work Monitoring speed in automotive testing Quality control in manufacturing Troubleshooting rotating equipment without stopping the machine Package Includes: 1 x UNI T Non-Contact RPM Meter Tachometer UT372