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6. CONNECTING A RAIN SENSOR
An interrupt type normally open rain sensor can be connected to the controller. The sensor
connects directly to the two controller sensor terminals “SNS”.
1. Connect either wire from the sensor to the two sensor terminals on the controller (see
figure below). Follow sensor manufacturer’s instructions for calibrating the sensor.
2. When the sensor is activated, a sensor icon appears on the display. In that mode it
prevents the valves from being opened.
NOTE: The regular mode on the screen for sensor is NC. Connection to the sensor
terminals is blocked by a piece of metal bridge. In order to install the sensor, the
bridge must be removed from the terminal board. In order to re-block the sensor, the
bridge should be re-installed. Should the bridge be lost, the sensor’s exit can be fused
with the aid of regular electric wire.
