UT309A Professional Infrared Thermometer can determine surface temperature through the energy radiated by the target surface. It is designed to meet some of the highest protection ratings in UNI-T’s product line, IP65 and 3m drop proof. With a rapid response rate of 250ms, high measurement accuracy, and multiple scanning modes, UT309 proves to be a necessary tool for engineers and technicians working in a various fields such as electrical distribution inspection, HVACR maintenance, transportation equipment inspection, instrument repair, and many more.

Features of UT309A:

1. 3m drop-proof, IP65Large LED display with backlight
3. High/Low-temperature alarm with LED indication
4. Lock measurement
5. Data hold/auto power-off



Temperature range -35°C~450°C
Accuracy ≥0°C: ±1.8°C or ±1.8%
<0°C: ±(1.8°C+0.1°C/°C)
≥32°F: ±3.6°F or ±1.8%
<32°F: ±(3.6°F+0.1°F/°F)
Resolution 0.1°C/0.1°F
D:S ratio 10:01
Response time 250ms (95% of reading)
Emissivity 22:48
Number of lasers Single laser
Laser type Class 2
Laser power <1mW
Laser wavelength 630nm~670nm
Spectral response 8μm~14μm

Secondary Features

°C/°F selection/Laser switch
Display hold(s) 8
Data hold/auto power-off
Low battery indication
Lock measurement
High alarm (red LED)
Low alarm (blue LED)
LCD backlight
Tripod mounting hole
General Characteristics
Power 9V battery (6F22)
Display 32mm x 29mm
Product color Red and grey
Product net weight 292g
Product size 189mm x 118mm x 55mm
Standard accessories PC software CD, carrying bag
Standard individual packing Gift box, blister, English manual (German, French, Spanish optional)
Standard quantity per carton 10pcs
Standard carton measurement 430mm x 335mm x 330mm
Standard carton gross weight 6.5kg


Package Includes:
  •   1 x UT309A Professional Infrared Thermometer
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