5
The Worldʼs Most Advanced and
Versatile Rain Sensor
The new Hunter Rain-Clik and Wireless Rain-Clik
have all the proven features of the Hunter Mini-Clik
Rain Sensor plus advanced features such as
a Quick Response™ sensing mechanism.
Unlike all other rain sensors on the market,
this feature allows the Rain-Clik to in-
stantaneously shut off an irrigation
system when rainfall begins to
occur. Installers and city manag-
ers will appreciate this feature, as
they will no longer be burdened by phone calls from
the public in response to an irrigation system operating
during the rain, even during a short cloudburst.
The wireless version of the Rain-Clik expands the
product versatility even further as there are absolutely
no control wires that need to be run between the sen-
sor and the controller. For sites that present difficulty
in routing wire as well as for retrofit applications, the
wireless feature provides a cost effective quick and
clean installation.
PRODUCT FEATURES
AND BENEFITS
Quick Response…
Irrigation system shut-down as soon as it begins
to rain
Due to the exclusive quick response feature of the
Hunter Rain-Clik, an irrigation system will be shut
down as soon as it begins to rain. All other rain sensors
that are on the market today will allow the irrigation
system to operate while it is raining, only shutting the
system down after a substantial amount of rain has
fallen, thereby reaching the preset quantity to activate
the sensor.
There may be many public perception issues with
these traditional rain sensors that do not shut down the
irrigation system as soon as it starts raining. Two com-
mon scenarios are as follows:
1. A homeowner has a rain sensor on the irrigation
system that was recently installed by a contractor.
During a subsequent rain shower the rain sensor
does not shut down the irrigation system as there
was not enough rainfall to activate the sensor. He
is under the impression that, because of his rain
sensor, the system should be off when it rains. This
prompts a call to the installing contractor to come
out and “fix” the system, a call that would not occur
if a Hunter Rain-Clik were installed instead of a
traditional rain sensor.
2. A concerned citizen is driving to work during a rain
shower and observes a local park being irrigated. As
a result, this individual places a series of irate phone
calls to city officials because the perception is that
an irrigation system operating in the rain is wasting
precious water resources.
With these issues in mind, Hunter has integrated the
quick response technology into the Rain-Clik, which
will shut down an irrigation system very quickly after
it starts to rain and will keep it off for a short period of
time once it stops raining. Dependent on the intensity
of the rain, the Hunter Rain-Clik will shut down the
irrigation system within 2-5 minutes after it begins to
rain by interrupting the controller common circuit. The
system will remain off for approximately 2-3 hours
depending on the specific climatic conditions of the site
after the rain ends.
Adjustable Dry-Out Period to Match
Local Conditions…
Adjusts the irrigation shut down period to account
for different types of soil and climatic conditions,
automatically compensating for the rainfall that
has occurred
Depending on site requirements and the amount of
rainfall that has occurred, a desired shut down time
can be set by adjusting the vent ring on the sensor. The
Rain-Clik can be adjusted to keep the irrigation system
from operating after a rainstorm from approximately
a minimum of 2 hours to a maximum of 3 days. This
is accomplished by setting an adjustable, calibrated
vent ring, which controls the “drying out” times of
the hygroscopic discs inside the Rain-Clik. The actual
dry-out time is determined by local weather conditions
such as sunlight intensity, wind, humidity, etc. As these
discs dry out, they shrink in overall height; eventually
releasing the internal micro-switch which will allow
the irrigation system to operate during the next pro-
grammed irrigation cycle on the controller.
RAIN-CLIK™ /
WIRELESS RAIN-CLIK™
Rain-Clik
™
/ Wireless Rain-Clik
™
Sensor
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