Laser Range Finder	UT391
Basic Functions	Measuring Range	Precision
Length Measurement	0.1m~60m	± 1.5 mm
	4 in ~197 ft	± 0.06 in
	Support 3 types of length units measurement (m/in/ft), display 4 types of length units
Special Functions		Description
Size, Volume Measurement	√	Display support 4 types of units (m 2 /ft 2 /m 3 /ft 3 )
Indirect Measurement (Pythagorean Proposition)	√	Support 2 times, 3 times indirect measurement
Addition/Subtraction	√
Continuous Measurement	√
Max/Min Value Measurement	√
Multiple Row Display	√	Maximum display 4 rows of data
Selectable Measurement  Reference Point	√	Can choose top or bottom of the Rangefinder as measurement reference point
Buzzer Indication	√
Backlight	√	White (has auto turn off function)
Auto Correction Technology	√	Measurement value correction or External Calibration
Software error Reporting	√	Error code indication
Data Hold	√	Automatic hold data
Data storage	√	Store up to 20 groups of data
Data Cleanup	√
BatteryPower Indicator	√	Batterystatus“Full, Moderate, Low”
Laser Manual/Auto OFF	√	Laser auto Off after 30sec. of idling
Manual/Auto Power OFF	√	Rangefinder auto Off after 180sec. of idling
Dustproof & Waterproof	√	IP54
Laser Type/Level	635nm, Class II
BatteryLife	>5000 times
Buttons Life	>1,000,000 times
General Characteristics
Battery	Type  AAA  2×1.5V
Product Colour	Red and Grey
Product Net weight	100g(including battery)
Product Size	109×49×28 mm
Standard Accessories	Carry bag, Battery, Simple Screwdriver (loading/unloading battery)
Standard Individual Packing	Blister, English Manual, Warranty Card
Standard Quantity Per Carton	40pcs
Optional Accessories	Lanyard, Sighting Board.