Ehdis 2-in-1 Digital Multi Function Tachometer with Ambient Thermometer Non Contact Tach RPM Temperature Meter Batteries Excluded

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About Ehdis 2-in-1 Digital Multi Function Tachometer With

Specifications and Parameters Counting range: 10-99999RPM Temperature range: -10°C to 50°C Resolution: 0.1/1RPM Accuracy: +/-0.4%+2 Sensor type: Photocell Measurement distance: 50-500mm Working temperature and humidity: 0 ~ 50°C (45 ~ 80% RH) Storage temperature and humidity: -20 ~ 60°C (≤ 80% RH) Power voltage: 9V/6F22 (battery NOT included) Weight:120g (Net weight) Size: 164mm x 113mm x 49mm (6.46 x 4.45 x 1.93in) Package 1 x tachometer (battery NOT included) 4 x reflective sheet (10x2cm) 1 x storage bag 1 x English Manual Rotational Speed Measurement 1) Stick the reflective paper on the object to be measured. 2) Fix the tachometer in a stable position or state, so that the laser emission and receiving window of the tachometer are 50 to 500 mm away from the object to be measured. 3) Press the power/measurement button to start the counting measurement, you can also press the laser button to enter the continuous measurement. Align the laser to the reflective paper on the measured object, the optimal measurement angle should be able to keep the measured value stable. 4) Start the device to be measured, and the tachometer will display the rotation speed of the measured object.