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The Irritrol RS1000 Wireless Rain Sensor system consists of two primary units:
1. Wireless Rain Sensor Transmitter (Outdoor Unit)
This unit is installed outdoors and contains the rain-sensing mechanism. It detects rainfall and wirelessly transmits the "wet" or "dry" status to the receiver. It features adjustable settings for rain accumulation and evaporation rate, and is labeled with "Irritrol" and includes the sensing discs.
2. Wireless Rain Sensor Receiver (Indoor Unit)
This unit is installed indoors, typically near your irrigation controller. It receives signals from the outdoor transmitter and communicates with the controller to pause or resume irrigation based on the rain status. It features indicator lights for "Sensor Rain Status" (blinking - bypass on), "Signal", and "Power" (blinking - attn. reqd.), along with a "Smart Bypass" button. The model number "RS 1000" is also visible on the unit.
Image: The complete Irritrol RS1000 Wireless Rain Sensor kit, including the outdoor rain sensor transmitter, the indoor receiver unit with wiring, and the mounting bracket.
Operating the Rain Sensor
Adjusting Rain Sensitivity
The outdoor transmitter contains water-absorbent rings that expand when wet and contract when dry. You can adjust the amount of rainfall required to activate the sensor (e.g., 1/8", 1/4", 1/2", 3/4") by rotating the top cap of the sensor. A higher setting requires more rain to trigger the sensor. There is also a twist ring to control the evaporation rate, which determines how quickly the rings dry out and allow irrigation to resume. Adjust this based on your local climate and soil type.
Smart Bypass Function
The indoor receiver unit features a "Smart Bypass" button. Pressing this button allows you to temporarily override the rain sensor and run your irrigation system even if rain is detected. The signal light on the receiver may go out when bypass is active but will automatically reset within approximately one hour after the bypass is turned off.
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The outdoor transmitter unit is powered by a battery, typically located underneath the unit. While batteries are designed for long life (e.g., up to five years), they will eventually need replacement. Refer to the specific instructions provided with your sensor for the correct battery type and replacement procedure. Regular battery checks are recommended.
Cleaning the Sensing Mechanism
Periodically inspect the water-absorbent rings inside the outdoor transmitter for any debris, dirt, or insect nests that might obstruct their movement. The rings can be removed for cleaning if necessary. Ensure they are reinstalled correctly after cleaning.
