7
Adjusting the Rain Sensor Threshold
e Weather Sensor is preset to suspend watering at 1/4” (6
mm) of accumulated rainfall. ree alternate settings of 1/8” (3
mm), 1/2” (12 mm) and 3/4” (19 mm) are provided. Prior to
installing the Weather Sensor, adjust the threshold to the
preferred setting as required.
Increasing the threshold setting results in extending
the length of time required for the sensor to shut o or
postpone watering during rain. is will also postpone
when the dry out period commences and scheduled
watering will resume. In areas where heavy fog or mist
is common, the 1/8” (3 mm) setting may trigger false
readings and suspend irrigation. It is recommended that a
higher setting is used in these areas.
1. Turn the cap slightly, releasing it from the two retaining pins.
2. Adjust the cap to engage the pins at the preferred slot setting.
The Weather Sensor
Important: e Weather Sensor must have full exposure
to sun, wind and rain, and must not be installed inside a rain
gutter, or in any location where immersion, runo, or contact
with irrigation spray will occur. Avoid installating near a heat
source, such as a heater vent or chimney. Also avoid installation
near any large metal structure or high current-draw equipment
that may generate signal interference. Ensure the antenna wire
hangs unobstructed below the Weather Sensor.
e communication range of the Wireless Weather Sensor
system is 1000’ (305 m) LOS (line of sight). Some loss of
range can be expected due to interference from obstacles
in the signal path. Test the signal reception from the
proposed installation site prior to mounting the Weather
Sensor, as described in the following procedure.
1. Start a manual watering operation for a zone that can be
seen from the proposed Weather Sensor location. Press and
hold the Rain Sensor test pin to send a signal to the Smart
Connect. If the signal is received, watering should shut o
within a short time. If not, repeat the test from a dierent
location until communication is established.
1/4” (6.4mm)
1/2” (12mm)
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