Uni-T UT303D+ Infrared Thermometer -32°C – 1300°C

SKU: UT303D+
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Professional IR  Thermometer -32°C – 1300°C.



The UT303D  infrared thermometers can precisely target objects within 250ms with single spot laser for fast troubleshooting. They feature 30:1 D:S ratio, adjustable emissivity, powered by battery or USB. UT303D can also be used for continuous monitoring through SCAN mode.


  • ±1.5℃ temperature measurement accuracy
  • User defined visual and audio alarm
  • High-contrast EBTN colour display
  • MAX/MIN/AVG/DIFF/Hold modes
  • Dual lasers
  • Temperature recording up to 99 groups
  • Date/time display
  • Time scheduled measurement.

1 x UT303D, 1 x Battery, 1 x Carrying Bag, 1 x USB Cable (External Power), 1 x Blister, 1 x English Manual and 12-month warranty.


Specifications UT302A+ UT303A+ UT303D+
Temperature range -32℃~700℃ -32℃~800℃ -32℃~1300℃
-25.6℉~1292℉ -25.6℉~1472℉ -25.6℉~2372℉
Accuracy ≥0℃: ±1.5℃ or ±1.5%; <0℃: ±(1.5℃+0.1℃/℃)
≥32℉: ±3.0℉ or ±1.5%; <32℉: ±(3.0℉+0.1℉/℉)
Repeatability 0.7℃ or 0.7% (1.5℉ or 0.7%)
D:S ratio 20:1 30:1
Response time 250ms
Emissivity 0.1~1.0 (adjustable, stores 5 sets of preset values)
Spectral response 8um~14um
Laser power < 1mW
Auto power off
Low battery indication
LCD display Color EBTN
High/low LED alarm
High/low audible alarm
Data hold/Lock measurement
℃/℉ selection
Data storage with date and time 99
Scheduled measurement
Operating temperature 0℃~50℃ (32℉~122℉)
Storage temperature  -20℃~60℃ (-4℉~140℉)
Operating humidity <90%RH (non-condensing)
Drop test 1m
Tripod mounting hole
General Characteristics
Power 9V battery
Display 35mm x 35mm
Product colour Red and grey
Product net weight 310g
Product size 172mm x 113.5mm x 53mm
Standard accessories Battery, carrying bag
Standard individual packing Box, blister, English manual


Uni-T UT303D+ Infrared Thermometer English Manual

Uni-T UT303D+ Infrared Thermometer Product Flyer