Brand: UNI-T - Model: UT372 - Quantity: 1 - Color: Red + Grey - Material: ABS - Display: 1.8" LCD 5 digit - Max. Display: 99999 - RPM: 10~99.999r/min 100~999.99r/min 1000~9999.9r/min 10000~99999r/min - Resolution: 0.001r/min 0.01r/min 0.1r/min 1r/min. - Accuracy: +/- (0.04% + 2) - Transducer type: Photo diode and laser - Laser type: Red laser - Measurement distance: 50mm~200mm - Drop test: 1 meter - Power supply: 4 x AA batteries (Included) - Operating temperature: 23'C +/- 5'C - Operating humidity: - Function: Speed measurement full symbol indicates auto measurement range data hold controlled automatic shutdown laser emission sampling sampling rate adjustable and USB communication. - Packing list: - 1 x Tachometer - 4 x AA batteries - 1 x Reflective paper - 1 x USB cable (100cm) - 1 x Software CD - 1 x English user manual CD Content: http://m2.img.dxcdn.com/CDDriver/sku.152063.rar