RSTHM-2

RSTHM-2 is an indoor sensor that measures indoor temperature, relative humidity and ambient light. The series is powered by Modbus RTU, and all parameters are available via Modbus RTU. This means that the Modbus RTU connection and the 24 VDC power supply can be connected via one RJ45 connector.

The software is easy to update and change all settings via Modbus RTU. Thanks to the integrated ambient light sensor the ventilation system can be optimized depending on room occupancy.

The sensor is equipped with three LED indicators to indicate temperature and relative humidity levels. Their activation can be set via Modbus RTU. Article number: 40025293

Main features

• Available ranges of temperature and relative humidity,
• 24 VDC, powered by Modbus,
• Ambient light sensor with adjustable "active" and "standby" levels,
• Modbus RTU (RS485),
• 3 LEDs with adjustable light intensity to indicate operating status,
• Long-term stability and accuracy.

Technical data:

• Supply voltage: 24 VDC, Power over Modbus
• Maximum power consumption: 0.312W
• Nominal or average power consumption during normal operation: 0.234 W
• Imax: 13mA
• Available temperature range: 0-50°C via Modbus RTU
• Accuracy: ±0.4°C (0-50°C), ±3% rH (0-100% RH)
• Available range of relative humidity: 0 - 100% rH via Modbus RTU
• Degree of protection: IP30 (according to EN 60529)
• Temperature: 0 to 50°C
• Humidity: 0-100% RH (no condensation)