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Rain Sensor Mounting: Height, Exposure, and False Trips

Location Matters

Mount sensors with open sky exposure but away from walls that shed water unpredictably. Keep them clear of sprinkler spray and gutter splash.

Height Guidelines

Follow manufacturer height and tilt guidance—many units need level mounting to drain properly after storms.

Wired vs Wireless

Wired sensors avoid battery issues but require clean routing. Wireless models need periodic battery checks and strong signal paths.

Testing

Use the manual wet test each spring and log results in the controller notes.

Frequently Asked Questions

Why does my sensor stay wet?

Debris on the hygroscopic disks or poor drainage—clean and remount.

Can I mount under eaves?

Usually no—sheltered mounts miss real rainfall.

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