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Power supply | 230VAC,110VAC,24VAC/VDC selectable in the order |
| Output | One or two Max. 5A relay/each for the On/Off output |
| Displaying | LCD |
| External sensor connection | Typical 2m, 4m/6m/8m selectable |
| Net weight | 280g |
| Dimensions | 120mm(L)×90mm(W)×32mm(H) |
| Mounting standard | Wall mounting in the wire box of 2”×4” or 65mm×65mm |
Sensor spec. | Temperature | Humidity |
Accuracy | ±0.5℃ (20℃~40℃) | ±3.5% RH (20%-80%RH), 25℃ |
Measuring range | 0℃~60℃ | 0~100%RH |
Display resolution | 0.1℃ | 0.1%RH |
Stability | <0.04℃/year | <0.5%RH/year |
| Storage environment | 0℃-60℃, 0%~80%RH | |








Tongdy Sensing, located in Beijing Zhongguancun Environmental Science and Technology Park, which is the leader of air quality detection.Tongdy has been always focusing on its strong technology development and design capabilities, constantly providing high quality products for air quality monitoring and control.
Tongdy has its own R&D office building and massive investments in R&D facilities like aging and testing laboratories and professional calibration chambers provide the necessary conditions for its continuous R&D and stable development. Tongdy’s products include: Carbon dioxide, carbon monoxide, ozone, TVOC, PM2.5/PM10, formaldehyde and other gas monitors/controllers; indoor air quality/in-duct air quality/outdoor air environment monitors, data collection and analysis.
These products have been widely used in thousands of projects in Europe, North America, the Gulf region and the Asia-Pacific region for over 15 years, and accumulating long-term application data and experience in different environment.
Tongdy has excellent reputation and popularity in the HVAC and green building industries.



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