THD-D1-T is a duct-mount temperature and humidity transducer from Autonics. It provides RS-485 Modbus RTU communication output for both temperature and humidity parameters, enabling seamless integration with building-automation systems. The device features a 100 mm sensing probe, operates on a 24 VDC supply, and offers measuring ranges from −19.9 to 60.0 °C for temperature and 0.0 to 99.9 % RH for humidity. It has an IP65-rated housing (excluding the sensor part) for reliable performance in duct environments.
Features
- Duct-mount transducer with 100 mm sensing probe
- RS-485 (Modbus RTU) output for temperature and humidity
- 24 VDC supply voltage
- Range: −19.9 to 60.0 °C / 0.0 to 99.9 % RH
- Sampling cycle 500 ms; IP65 housing (excluding sensor part)
Technical Specifications
| Model | THD-D1-T |
| Mounting type | Duct mount |
| Measured parameters | Temperature, Humidity |
| Output type | RS-485 Modbus RTU |
| Measuring range (temperature) | −19.9 to 60.0 °C |
| Measuring range (humidity) | 0.0 to 99.9 % RH |
| Sampling cycle | 500 ms |
| Accuracy (temperature) | ±1.0 °C (at room temperature) |
| Accuracy (humidity) | Typ. ±2.0 % RH (10 to 90 % RH) / Max. ±2.5 % RH |
| Supply voltage | 24 VDC ±10 % |
| Protection structure | IP65 (excluding sensor part) |
| Ambient temperature | −20 to 60 °C |
| Weight | Approx. 415 g |
For more information, visit the OEM page for THD-D1-T.







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