FEATURES
Addition and subtractionContinuous measurementCompact and light, easy to carryEasy and safe to use, high sensitivitySelf-calibration function, high accuracyQuickly measure distance, calculate area and volumeHeight measurement by using Pythagorean TheoremDetermine distance up to 40m/131ft with accuracy of plus or minus 2.0mm
Specifications
Brand
UNI-T
Model
UT390B+
Measuring Accuracy
±2.0mm
Measuring Range
0.05～40m
Measuring Unit
m, ft, in
Laser Type
620～690mm
Laser Class
635nm, <1mw, II Clase
Single Measurement Time
0.25～4s
IP Protection
IP40
Operating Temperature
-20～65℃
Batteries
2 x 1.5V AAA Alkaline Batteries(Not Included)
Dimensions
(4.41 x 1.97 x 0.98)" / (11.2 x 5 x 2.5)cm (L x W x H)
Material
Plastic
Color
Red & Gray
Weight
2.96oz / 84g
Date Storage
30 Groups
Automatic Shutdown
150s
Continuous Measurement
√
Area/Volumn Calculation
√
Pythagoras Theorem Calculation
√
Add/Subtract
√
Length Add/Subtract
√
Area Add/Subtract 
√
Volumn Add/Subtract
√
MAX/MIN
√
Automatic Calibration
√
Auto laser Off
√
Buzzer Indicate
√
Battery Indicator
√
Levelling Instrument
√
Auto Power Off
√
Storage Temperature
-20℃ ~ 60℃
Operate Temperature
0℃ ~ 40℃
Relative Humidity
RH85%
 
Package Includes
1 x UNI-T UT390B+ Laser Distance Meter (Battery Not Included)1 x English User Manual1 x Pouch Bgs1 x Sling