This manual introduces the function and main technical parameters of the TH485 network temperature and humidity transmitter module, including the measurement range, humidity range, accuracy, alarm switch output, power supply, display resolution, data collection cycle, data output format, working environment, maximum size, weight and other parameters.
The TH485 is a network‑type temperature and humidity transmitter that measures environmental temperature and humidity, displays the values on a local screen, and can send data over an RS‑485 bus using the Modbus protocol. It supports configurable communication address, baud rate, alarm thresholds, and provides OC alarm output with a flame‑retardant insulated fiber housing.
The manual covers product functions, technical specifications, wiring and power connections, parameter configuration using the FUN/MODE key, measurement precautions, detailed Modbus communication protocol, data frame structure, command examples, and CRC checksum generation for reliable data transmission. This manual is written in Chinese.
| Supply voltage | 5 V DC / 24 V DC |
|---|---|
| Current consumption | < 30 mA |
| Humidity measurement range | 0 % RH – 100 % RH |
| Temperature measurement range | -10 °C – 50 °C |
| Data acquisition period | < 2 seconds |
The module ships with a default baud rate of 9600 bps.