These intelligent multifunctional flush mounted room sensors feature adjustable temperature, relative humidity and ambient light level. Their algorithm controls a single analogue / modulating output based on the measured temperature and relative humidity values, which can be used to directly control an EC fan or an actuator powered damper. The output type can be selected: 0-10 VDC / 0-20 mA / 0-100 % PWM. The output value is also available via Modbus RTU. The required supply voltage is: 15-24 VAC ± 10 % / 18-34 VDC. The firmware can easily be updated thanks to the bootloader. All settings can be adjusted via Modbus RTU. Thanks to the integrated ambient light sensor, the ventilation system can be optimised depending on the occupancy of the room. The light intensity of the three integrated LEDs for status indication can be adjusted via Modbus RTU.