This non- tachometer is a professional and practical motor speed meter to measure revolutions per minute(RPM) with wide measuring and high resolution. It's featured with high accuracy measurement, quick measuring time and long detecting distance up to 500mm(20 inch) with . This tachometer is very easy to use by applying a reflective tape(included 3 in package) on target object, then aim at mark by beam. This tachometer has wide of applications, such as measuring rotating speed of machine, motors, wheels, lathe for metal or wood cutting work, electrical fan, paper making, industry, chemical fiber, washing machines, car making etc. Features: No- handheld digital photo tachometer with stable performance. Wide measuring (2.5RPM to 99999 RPM) & high resolution(0.1RPM or 1RPM). Automatically record MAX. value, Min. value and Last value with low battery indication. Capable of measuring at a distance from 2-20in(50-500mm) with large LCD display. 0.8 Second sampling time and 5-digit 18mm LCD display with non- RPM measurement. Wide usage: usually can be used in field of motor, wheels, lathe for metal or wood cutting work, electrical fan, paper making, industry, chemical fiber, washing machines, car making etc. Specifications: Color: Dark Grey Material: ABS Display: 5-digit 18mm(0.7") LCD Display Measuring : 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 Crystal Oscillator Test : Automatic Switching Sampling Time: 0.8s(over 60RPM) Function: Display Last Value, MAX. Value, Min. Value Supply: 1 * 9V 6F22 Battery(NOT Included) Consumption: Approx. 30mA Working Temperature: 0-50(32-122) Product Size: 130 * 70 * 29mm / 5.12 * 2.76 * 1.14in Product Weight: 79g / 2.80oz Package Size: 15 * 9.3 * 5cm / 5.91 * 3.66 * 1.97in Package Weight: 113g / 4.00oz Note: 1. You stick reflective tape onto target object before measuring. 2. Do not point beam towards eyes directly; safety eyewear is recommended. 3. Do not use it near explosive gases or in other potentially explosive areas. Package List: 1 * Digital Tachometer 3 * Reflective Tape Marks 1 * User Manual(English) No-Contact handheld digital photo tachometer with stable performance. Wide measuring range(2.5RPM to 99999 RPM) & high resolution(0.1RPM or 1RPM). Automatically record the MAX. value, Min. value and Last value with low battery indication. Capable of measuring at a distance from 2-20in(50-500mm) with large LCD display. 0.8 Second sampling time and 5-digit 18mm LCD display with non-contact RPM measurement.