Does this only shut the system down when it's actively raining, or will it prevent start up a day or two after a heavy rain?

The Rain Clik will actually do both. It will shut the system down if it starts raining during operation as long as it is enough water. Mine normally will not run for at least 24 hours after a good rain.

how far apart can sensor and reciever be?

Up to 800' line of sight. This varies depending on what the signal is passing through, walls, trees etc. We recommend trying to keep it within 50' of the controller.

Will the transmitter and receiver stay paired up after a power outage or do you have to manually reestablish pairing?

I have to reset from outside every time there's an outage.

Can this be installed with a Weathermatic SL 1600 controller?

If the Weathermatic SL has a "bypass" or sensor system in place, you should be able to us it. Review the owners manual for the Sensor to see if your controller wiring schematic is compatible. I used the Hunter RainClick on a Rainbird controller. Hope that helps.

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Hunter Rain Clik WRCLIK Wireless Rain Sensor with Freeze Shutoff, Automatic Shutoff for Sprinkler Controllers, Compatible with Most Irrigation Controllers, Mounts Easily to Gutter or Wall

Product ID: 14673840

Details

Brand
Hunter
Color
White
Item Weight
14.4 Ounces
Material
Plastic
Operating Temperature
37 Degrees

📡Wireless, no wiring needed

❄️Freeze shutoff at 37°F

🌧️Instant rain-triggered shutoff

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€ 169.42

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Sold byAmazon GERMANYDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay dry, save green—smart irrigation starts here!

FREEZE PROTECTION - Shuts off irrigation below 37°F to prevent freeze damage and costly repairs.
SMART WATER SAVER - Automatically halts sprinklers at the first drop, cutting waste and bills.
UNIVERSAL COMPATIBILITY - Works seamlessly with most irrigation controllers, perfect for pros and homeowners alike.
EFFORTLESS WIRELESS SETUP - No trenching or wiring—mounts easily on gutters, walls, or fences for quick installs.
CUSTOMIZABLE RECOVERY DELAY - Adjust vent ring to control watering resumption, tailored to your local climate.

The Hunter WRCLIK Wireless Rain and Freeze Sensor is a durable, weatherproof device that instantly stops your sprinkler system when rain begins or temperatures drop to freezing. Featuring Quick Response® technology and wireless installation, it mounts easily on gutters, walls, or fences without wiring. Compatible with most irrigation controllers, it offers customizable watering delays to optimize water use and protect landscapes, making it an essential upgrade for efficient, hassle-free irrigation management.

Specifications

ASIN	B00FYRW3XQ
Best Sellers Rank	#8,061 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #42 in Automatic Irrigation Accessories
Brand	Hunter Industries
Brand Name	Hunter Industries
Color	White
Customer Reviews	4.6 out of 5 stars 1,439 Reviews
Global Trade Identification Number	00611698160053
Included Components	WRCLIK Controller
Item Type Name	Water Controller
Item Weight	14.4 Ounces
Manufacturer	Hunter Industries
Material	Plastic
Material Type	Plastic
Model	WRCLIK
Operating Temperature	37 Degrees Fahrenheit
Part Number	WRCLIK
Smart Home Compatibility	Not Smart Home Compatible
UPC	611698160053
Unit Count	1.0 Count

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