Contact & Non Contact Laser Digital Tachometer , DT2236B LCD For iPad Pro 12.9 you can freely choose the

you can freely choose the automatic shutdown mode or set a specific shutdown time

AC Voltage: 10V/50V/250V/1000V

Input parameters: 5V2A

crystal texture

put the battery into 2 AAA batteries according to the positive and negative instructions

Contact & Non Contact Laser Digital Tachometer , DT2236B LCD For iPad Pro 12.9 you can freely choose the1. LCD Display: 5 digits, 18mm 2. Laser photo tachometer: 2. 5 to 99,999 RPM 3. Contact Tachometer: 0. 5 to 19,999 RPM 4. Surface Speed: 0. 05 to 1,999. 9 m min 5. Laser photo tachometer: 0. 1 RPM (2. 5 to 9999. 9 RPM) ; 1RPM (over 1000RPM) 6. Contact Tachometer: 0. 1 RPM (0. 5 to 9999. 9 RPM); 1RPM (over 1000RPM) 7. Surface Speed: 0. 01 m min. (0. 05 to 99. 99 m min.); 0. 1m min. (over 100m min) 8. Sampling time: 0. 8 sec. (over 60 RPM) 9. Test range