UT309 series 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.

• 3m drop proof, IP65
• Large LED display with backlight
• MAX/MIN/AVG/DIF mode
• High/Low temperature alarm with LED indication
• Lock measurement
• Data hold/auto power off

Technical data:

• Temperature range -35℃~650℃
• Accuracy ≥0°C: ±1.8°C or ±1.8%   <0°C: ±(1.8°C+0.1°C/°C)
• Resolution 0.1°C/0.1°F
• D:S ratio 12:01
• Response time 250ms (95% of reading)
• Emissivity 0.10~1.0 adjustable
• Number of lasers Dual lasers
• Laser type Class 2
• Laser power <1mW
• Laser wavelength 630nm~670nm
• Spectral response 8μm~14μm