Rain Seer Rain Sensor for Irrigation Controllers
Rain Seer Rain Sensors are irrigation control devices that automatically halt sprinkler systems during or after rainfall to save water and money, featuring adjustable sensitivity (1/8 to 1 inch) and, in some models, freezing detection. These sensors use hygroscopic disks that swell with moisture to break the circuit, and can be easily installed on fences or gutters.
Key Features and Benefits
• Automatic Shut-off: Interrupts the watering cycle when rain is detected.
• Water Conservation: Prevents overwatering, saving water and lowering utility bills.
• Adjustable Sensitivity: Allows for custom settings to trigger at different rainfall levels (typically 1/8 to 1 inch).
• Simple Installation: Easy to install without specialized tools, usually mounted in open areas like fences or gutters.
• Compatibility: Works with most irrigation controllers, often replacing the jumper wire on the controller's terminals.
• Additional Protection: Some models include freezing detection to stop irrigation when temperatures drop below
Operation and Maintenance
• Working Principle: Uses hygroscopic, absorbent disks that expand when wet to trigger a switch, and dry out to resume normal scheduling.
• Maintenance: Requires regular checks (about twice a year) to ensure functionality, especially for wireless models which may need battery replacements.
• Placement: Should be placed in an unobstructed area to directly receive rain, ideally not under leaves or trees.
• Testing: Can be tested by manually pushing the switch or spraying with water to ensure the controller stops.
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