TSM400-4-TH is a Wall-Mounted Temperature and Humidity Sensor with a RS485 Modbus RTU interface, designed for accurate monitoring in environments like factory and office spaces, and suitable for smart applications and data logging. It offers Air Temperature and Relative Humidity measurements. Features RS485 interface for up to 32 nodes with changeable bitrate, and other communications parameters. Connection via screwless terminal block.
£71.79
The TSM400-4-TH is a digital sensor designed to measure humidity and temperature, communicating via an RS485 Modbus RTU network. Its wall-mountable design makes it an ideal choice for monitoring environments such as server rooms, data centers, offices, and retail spaces. This sensor integrates both basic sensing elements and signal processing, delivering a fully calibrated digital output for superior measurement quality. Crucially, its sensing elements are factory calibrated, eliminating the need for any re-calibration throughout the product’s lifespan.
Supporting the widely adopted Modbus RTU protocol, the TSM400-4-TH seamlessly integrates into Building Management Systems (BMS) and Industrial Automation Systems (IAS). Each sensor comes with a unique serial code, enabling the connection of multiple sensors on the same RS485 bus. Encased in a slim plastic enclosure, the humidity and temperature sensor is designed for installation on standard flush-mounted or cavity wall boxes, accommodating openings up to 61mm.
| Temperature | Humidity | |
| Operating Range*: | -20 to +60°C | 10 to 90%RH |
| Accuracy | ±0.4°C (0.6°C Max) | ±3%RH (5%RH Max) |
| Long-Term Drift (Typical): | ±0.05°C | ±0.25%RH |
| Resolution: | 0.1°C | 0.1%RH |
| Power Supply: | 4.5 to 26vDC (5V @ 150mA) | |
| IP Rating: | IP20 | |
| Dimensions: | 81 x 81 x 30mm | |
| Connectors: | Screwless Terminal Block | |
* Recommended operating range is -10 to 60°C @ 20-80%RH. Prolonged operation beyond these ranges may result in a shift of sensor reading and slow recovery time.
 |
Pin | Description | UTP Wire Colour |
| TERM | For termination, connect to B- | ||
| B- | Line B- (RS485-) | Blue | |
| A+ | Line A+ (RS485+) | Blue/White Tracer | |
| GND | Ground (Negative Supply) | Brown | |
| +5÷30V | Positive Power Supply | Brown/White Traced | |
| 1-W | Not Used |
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