TASI Tachometer Contact & Non-contact Digital Tachometer Laser Photo Tachometer 3～100000RPM High Accuracy RPM Tachometer Backlit Display Data Hold Auto Power Off TA500 series digital tachometer that can measure the RPM or surface speed and distance. It is applicable to electric power, steel, petrochemical, aviation, fan manufacturing, pipeline ventilation system, underground warehouse and other occasions. Features: 【Accurate RPM Meter】This handheld tachometer is highly accurate and noncontact. Wide measuring range from 3RPM to 100000 RPM and high resolution of 0.1RPM or 1RPM, this rpm meter gives you accurate rotational speed readings from a distance. 【Contact & Non-contact Tachometer】Our digital tachometer integrates 2 measurement methods, contact type and photoelectric laser non-contact type. Tachometer can perform photoelectric speed measurement, light source flicker frequency measurement, contact RPM measurement, and contact line speed measurement. 【Tachometer with Larger Speed Range】The digital non-contact tachometer displays rotation speeds from 3-100,000 RPM, contact type tachometers can  measure 3-19,999 RPM, 0-99,999m, 0-1999.9m/min, 0-9999.9ft/min.  【Multi-Function Tachometer】This handheld tachometer can record the max value, and min value, In addition, the digital counter also has functions such as data hold and automatic shutdown. 【HD Backlit Display】Tachometer has a high-definition LCD backlit display, allowing you to read clearly even in dark conditions.  【Wide Application】Tachometer can be widely used in motor, fan, paper, plastic, chemical fiber, washing machine, automobile, aircraft, ship and other manufacturing industries. Specifications: Model: TA500A, TA500B, TA500C (Optional) Measurement Methods: Non-contact / Contact / Non-contact and Contact (Optional) Material: ABS Range:  TA500A: Non-contact: 3~100000RPM TA500B: Contact: 3~19999RPM, 0~99999m, 0~1999.9m/min, 0~9999.9ft/min TA500C: Non-contact Type: 3~100000RPM               Contact Type: 3~19999RPM, 0~99999m, 0~1999.9m/min, 0~9999.9ft/min Accuracy:  TA500A: ±(0.05%FS+1RPM) TA500B: ±(0.1%FS+1RPM), ±(0.1%FS+0.2m), ±(0.1%FS+0.2m/min), ±(0.1%FS+0.6ft/min) TA500C: Non-contact Type:  ±(0.05%FS+1RPM)               Contact Type: ±(0.1%FS+1RPM) Resolution: TA500A: RPM: ＜10000：0.1, RPM: ≥10000:1 TA500B and TA500C: RPM: ＜10000：0.1, RPM: ≥10000:1, m: ＜10000 : 0.1, m: ≥10000 : 1, m/min: ＜200 : 0.1, ft/min: ＜1000 : 0.1 Display: 6 digits, max 99999 Effective Measuring Distance: 50mm~500mm Sampling Time: 0.8s (above 60 rpm) Working Enviroment: -10~50℃,max 80%RH, indoor altitude＜2000m Storage Enviroment: -10~50℃,max 70%RH (battery removed) Power: 2 x 1.5V AAA (R03 / LR03) (Not included) Item Size: 146 * 59 * 29mm / 5.75 * 2.32 * 1.14in Item Weight: 120g / 4.23oz Package Weight: 188g / 6.63oz Package Size: 20 * 7.5 * 4cm / 7.87 * 2.95 * 1.57in Package List: 1 * Digital Tachometer 2 * Reflective Tape 4 * Accessories 1 * User Manual (English)   Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.