Renke RS-WS-N01-9A-LCD-EX Industrial Duct-Mounted Temperature & Humidity Sensor - RS485 Modbus, LCD Display

The sensor uses the RS485 physical layer with the Modbus-RTU protocol for communication. You can configure the device address and baud rate via Modbus commands to avoid address conflicts on the bus, allowing multiple sensors to be daisy-chained on a single network for centralized data logging.

The sensor operates on a wide-range 10-30V DC power supply with very low 0.1W consumption. Typically, you connect the positive and negative power lines to the designated terminals on the sensor, alongside the RS485 data lines (A/B or D+/D-) for communication with your PLC or data acquisition system.

While the sensor's sealed probe is designed for harsh, high-airflow duct environments, its operating circuit temperature is rated for -20°C to +60°C. For full outdoor exposure, ensure the electronics compartment is protected from direct rain and condensation, as the primary housing is intended for duct mounting.

The sensor offers high precision with ±0.2°C temperature accuracy and ±2%RH humidity accuracy at reference conditions. It features excellent long-term stability with minimal annual drift. For most industrial applications, factory calibration is sufficient, but periodic verification against a reference standard is recommended for critical processes.