UNI-T Handheld Rangefinder Distance Meter 40M 50M 60M Medidor Laser Tape Build Measure Device Electronic Ruler Features LM series laser distance meter are handheld portable device than can easily and accurately measure length, area and volumn pythagorean by preing one buttonApplicable for interior /exterior design , constrcution , factor supervison,engineering inspection, fire aement etc.With LCD backlight for outdoor and indoor environment Range (m) Depending on the model Accuracy (mm) (2.0mm+5/100000D) Single measurement Continuous measurement Area measurement Volume measurement Direct Pythagoras Indirect Pythagoras Indirect Pythagoras Add/Subtract Electronic horizontal angle LM80/LM100/LM120/LM150 Auto horizontal measurement LM80/LM100/LM120/LM150 Auto vertical measurement LM80/LM100/LM120/LM150 Display type LM40/LM50/LM60: 2.0" EBTN screen LM80/LM100/LM120/LM150: 2.0" TN screen Measurement reference Front/rear reference Measurement units m/ft/in/ft+in Data logging 20 groups Auto power off 3 minutes without operation Auto laser off 30 seconds without operation Laser cla 2 Laser type 630-670nm, <1mW Battery type AAAx2 not contain battery Operating temperature 0C ~ +40C {32F ~ +104F) Storage temperature -20C ~ 70C (-4F ~ 158F) Size (mm) 122 * 52 * 29.5 Notice please: battery no include! If there are some problems about our products, we supports exchange, return or refund, but please contact with us and provide a clearly video. All returned items must be in the original packaging and you must provide us with the shipping tracking number, specific reason for the return. You have 7 days to contact us and 30 days to return it from the date it was received. If this item is in your poeion more than 7 days, it is considered used and we won't iue you a refund or replacement. There are no exceptions! Shipping cost is depend on duty.