Stand Alone Rain Sensor
Technical Information and Operating Instructions
Introduction.
The stand alone rain sensor automatically detects
rain or snow fall and signals the ventilation
control system to close open vents.
The sensor is built into a plastic weatherproof
enclosure. The mounting bracket system has
been designed such that the sensor can be
mounted on to any suitable external façade of a
building and adjusted for optimum rain
detection.
For correct operation, the sensor requires a
24VAC/DC ± 20% power supply @ 55mA to power
the electronics and heater element. The signaling
to the ventilation control system is via volt free
contacts rated at 30VDC @ 1A resistive. The
sensor is NOT suitable for operation at 230VAC.
