Introduction
The all new UT391 Laser Distance Meter is designed with high-precision laser range sensor, microprocessor, powerful operational function and software processing capability; combining with the strong-but-lightweight structure, UT390 is an accurate, durable, and easy-to-use Laser Rangefinder.
Accurate: In 60 meters range, the measurement precision can reach 1.5 mm;
Reliable: Measurement adopted auto correction and error reporting technology, massively reducing problems resulted form faulty operation;
Light and handy: Product net weight (including battery) is only 100g, easy to carry;
Long battery life: Each group of new battery can measure up to 5,000 times
Can be widely used in construction, decoration, property, transportation, fire, gardens, city planning, city management, water conservancy monitoring, power overhaul industries. As the replacement for traditional measuring tool, UT391 Laser Rangefinders is your ideal choice!
Laser Rangefinder                              UT391
Basic Functions Measuring Range Precision
 0.1m~60m ± 1.5 mm
Length Measurement 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 (m2/ft2/m3/ft3)
Indirect Measurement √ Support 2 times, 3 times indirect measurement
(Pythagorean Proposition)  
Addition/Subtraction √ 
Continuous Measurement √ 
Max/Min Vaule 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 √ 
Battery Power Indicator √ Battery status“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，﹤1mW， Class II 
Battery Life >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。
  
Application Examples：
●     In construction site, if you want to measure the distance, area, or volume, UT391 can get you the desired results after a few clicks.
●     In real estate residential delivery, you don’t need to worry about the complexity of measuring the public area and residential area. UT391 makes the complex measuring job simple.
●     Advertising poster has been prepared but unable to fit the supporting rack. There has been an error when using the traditional measurement tool to measure the poster. Problem could have been avoided if UT391 was initially used. UT391 provide most accurate result with simple measurement.
●     In fire exit inspection, you don’t need to carry long and heavy traditional measuring tape running up and down anymore. Use UT391 to save energy and time.
●     The urban road has been more and more crowed. Dealing with the traffic accident in a fast manner become very important. UT391 let you finish the job quicker and easier.
●     Road planning, land measurement, water level detection, power line set up, etc.; UT391 makes your measurement job easier!