Comparison of TRH series sensors

We offer growing variety of USB temperature and relative humidity sensors. Learn about the options and find the perfect one for your application.

Product table

Product Operating range T° Accuracy
(at 25°C, typical)
%RH Accuracy
(at 25°C, typical)
Sensor enclosure Cable type Particle filter
TRH450 -40°C to 125°C ±0.1°C ±1.5 %RH Aluminium Silicon Yes
TRH420 -40°C to 70°C ±0.1°C ±1.5 %RH PET mesh PVC Yes
TRH320 -40°C to 70°C ±0.3°C ±2.0 %RH PET mesh PVC Yes
TRH200 -40°C to 70°C ±0.3°C ±2.0 %RH None PVC No

Note: The above is a summary meant to highlight key differences. Please refer to individual product pages and datasheet for complete specifications.

Particle filter

Some models include a thin PTFE membrane that blocks more than 99.99% of particles over 200nm. This is recommended for harsh environments where extra protection against dust, soot and other contaminants is a requirement.

Enclosure types

The enclosure is what covers the digital sensor probe.

Picture Enclosure type Pros Cons
Aluminium Excellent physical protection, extended temperature Slower response time, higher cost
PET Mesh Good protection, low cost Slightly slower response time
None Minimal response time, low cost The digital sensing element is exposed.

Cable type

Most models use standard PVC cables, but high temperature range models use Silicon cables.

  • PVC: Low cost standard cable type, medium temperature range. Not suitable for extreme temperatures. Can crack if flexed at low temperature.
  • Silicon: High temperature resistance, stays flexible even at low temperatures.

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