Uni-T UT305A+ Infrared Thermometer (-50°C~1850°C)

SKU: UT305A+
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UT305A+ is a high-precision, high-distance ratio (55:1), wide temperature range (-50°C~1850°C) non-contact infrared thermometer.


The UT305A+  is a high-precision, high-distance ratio (55:1), wide temperature range (-50°C~1850°C) non-contact infrared thermometer. It can detect the thermal insulation performance of various types of equipment and is suitable for furnace kilns, heat transfer pipes, building thermal bridge effect, cold storage, greenhouses, floor heating and other fields.


  • Infrared professional mode
  • Surface heat conduction detection mode
  • Surface dew point detection mode
  • Surface temperature comparison mode
  • High-resolution TFT colour LCD
  • Trigger lock function, Reservation measurement
  • 999 groups of data storage, data output support PDF, CSV format
  • High-precision display of ambient temperature, relative humidity, dew point temperature and wet bulb temperature
  • Type K thermocouple temperature measurement.


  • Capacitance measurement
  • Resistance measurement.

1 x  UT305A+, 1Type-C data cable, Type K thermocouple probe (bead Type), 1 x English manual and 12-month warranty


Specifications UT305A+ UT305C+
Measurement range Infrared temperature measurement -50°C~1850°C




The environmental temperature measurement -10°C~50°C (14℉~122℉)
Relative humidity 10%RH~90%RH
Type K thermocouple -50°C~1370°C (-58.0℉~2498℉)
Accuracy Infrared temperature measurement -50°C~0°C, ±(1.0℃+0.1℃/℃)

-58℉~32℉, ±(2.0℉+0.1℉/℉)

0°C~2200°C, ±1.0℃ or ±0.01×t℃ (Which is greater)
32℉~3992℉, ±2.0℉ or ±0.01×t℉ (Which is greater)

The environment temperature measurement -10°C~0°C (14℉~32℉), ±1.0°C (±2.0℉)                                     0°C~40°C (32℉~104℉), ±0.5℃ (±1.0℉)

40°C~50°C (104℉~122℉), ±1.0℃ (±2.0℉ )

Relative humidity ±5%RH
Type K thermocouple ±(0.005×t+1.5)℃, ±(0.005×t+3.0)℉
Certification  CE UKCA
Distance ratio(D:S) 55:1
Emissivity 0.1~1.0 (adjustable)
Spectral response 8µm~14µm
Repeatability of infrared temperature measurement ±0.005×t℃(℉)or 1℃(2℉) (Which is greater)
Display resolution 0.1℃(0.1℉)
Unit conversion ℃ / ℉
Laser point Single laser, output < 1 mW, class II
Data storage 999 groups
Data output format PDF、CSV
Data communication or charging interface Type-C USB
Battery Li-ion 3.7V 2600mAh 18650 rechargeable lithium-ion battery
Charging time No more than 3 hours
Continuous working time Work continuously for no less than 20 hours on full charge
Buzzer alarm
Trigger lock function and reservation measurement
Real-time, date
LCD type 2.4 inch TFT LCD 320 * 240 pixels
 temperature coefficient ±0.1℃/℃ or ±0.1%℃/℃, ±0.1℉/℉ or ±0.1%℉/℉(Which is greater)
Work at an altitude of No more than 2000 meters
Drop test 1m
Standard k-type thermocouple probe (bead type)
Measurement range -40°C to 260°C (-40°F to 500°F)
Accuracy 0.075× T (t is measured temperature)
Length 1 m (40 in) long K-type thermocouple cable with standard micro thermocouple connector and bead probe
General Characteristics
Power Li-ion 3.7V 2600mAh 18650 rechargeable lithium-ion battery
LCD screen size 37mm x 49mm
Product colour red and grey
Net weight 375 g
Product size 205 x 65 x 124 mm
Standard accessories Type-C data cable, Type K thermocouple probe (bead Type)
Standard packing Box, toolbox, instruction manual, warranty card


Uni-T UT305A+ Infrared Thermometer English Manual

Uni-T UT305A+ Infrared Thermometer Product Flyer