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1. Contact measurement range: 3-19999RPM, 0-99999m, 0-1999.9m/min, 0-9999.9ft/min 2. Contact accuracy: 0.1%FS+1RPM 3. Speed ??display: 6-digit display, up to 99999 4. Effective measurement distance: 50-500mm 5. Measurement method: contact 6. Sampling time: 0.8 seconds (above 60 rpm) 7. Operating environment: -10 to 50 degrees Celsius, relative humidity within 80%, indoor altitude less than 2000m 8. Storage environment: -10 to 50 degrees Celsius, relative humidity within 70% (remove the battery) 9. Power supply: 2 x 1.5V AAA (R03/LR03) batteries (not included) 10. Display screen size: about 34 x 31mm 11. Size: about 146 x 59 x 29mm 12. Weight: about 117g
Features: 1. Semiconductor laser sensor, effective measurement distance 50mm-500mm 2. Can lock the maximum value, minimum value and real-time value during the measurement process 3. High-definition large screen display with white background light 4. Automatically shut down after 15 minutes of no operation (can be canceled manually)
