Fangrui Product Details Product Introduction Laser Rangefinder Is A Non-contact Detection Instrument With High Measurement Accuracy, Small Size, Easy To Use, Dustproof, Moisture-proof, Etc. It Is Mainly Used For Construction Measurement, Engineering Acceptance, Furniture Acceptance, Fire Fighting Facilities And Other Occasions. Mini Size Fits Comfortably In A Pocket, Easy To Carry With You Wavelet Rate Algorithm Enhances Small Signal Processing Capabilities. High Transmittance Ld Receiving Lens, Aspherical Collimated Focusing Lens, Clearer Focusing The High-definition Backlit Lcd Screen Adopts A High-definition Backlit Lcd Screen, With Clear And Delicate Display Technical Parameters 1.measurement Accuracy: -3mm 2.unit: M/in/ft 3. Measuring Range (without Reflector): 0.03-40m 4. Measuring Time: 0.1-3 Seconds 5. Laser Class: Class 6. Laser Type: 635nm, Less Than 1mw 7. Dustproof And Waterproof: Op54 8. Automatic Laser Shutdown: 60 Seconds 9. Automatic Shutdown: 480 Seconds 10. Illumination: White Led Light 11. Measurement R