DT-2234C+ Non-Contact Digital LCD Laser Photo Tachometer Mini RPM Tester Meter            Features:     1.This is a non-contact handheld digital photo tachometer with stable performance.     2.Wide measuring range from 2.5RPM to 99999 RPM and high resolution of 0.1RPM or 1RPM.       3.High sampling frequency, clear LCD display, high measuring accuracy.     4.This tachometer can automatically record the value, min value and last value.     5.With auto range, low battery indication and other functions.     6.Wide used in the field of motor, wheels, lathe, electrical fan, paper making, plastic industry, washing machines, car making, etc.           Specification:     Model: DT-2234C+     Material: ABS Plastic     Display: 5-digit 18mm(0.7") LCD Display     Measuring Range: 2.5RPM - 99,999RPM     Resolution: 0.1RPM at 2.5-999.9RPM, 1RPM at 1000-99,999RPM     Accuracy: ±(0.05%+1 digit)      Measuring Distance: 50-500mm / 2-20in     Time Base: 6MHz Quartz Crystal Oscillator     Range Selection: Auto range     Sampling Time: 0.8s(over 60RPM)       Power Supply: 1 * 9V 6F22 Battery(NOT included)     Power Consumption: Approx. 30mA     Working Temperature: 0℃ ~ 50℃(32℉ ~ 122℉)      Item Size: 130*68*26mm / 5.1*2.7*1.0in     Package Weight: Approx. 150g / 5.3oz           Package list:     1 * Digital Tachometer      1 * Blue Bag     3 * Reflective Tape  1 * User Manual(English)