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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WRCLIK Wireless Rain/Freeze Sensor for Sprinkler Controllers | Wireless rain/freeze shutoff sensor for most sprinkler controllers; gutter, wall, fence, or eave mounting

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

€ 154.58

Duties & taxes included

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Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Stay ahead of the weather—save water, save money, and protect your lawn effortlessly!

FREEZE PROTECTION - Shuts off irrigation when temperatures hit freezing, safeguarding your landscape from frost damage.
SMART WATER SAVER - Automatically halts sprinklers at the first drop of rain to prevent wasteful watering.
UNIVERSAL COMPATIBILITY - Seamlessly integrates with most irrigation controllers using normally open or closed sensor ports.
CUSTOMIZABLE WATERING RESUME - Adjustable vent ring lets you tailor watering restart times to your local climate and soil needs.
EFFORTLESS WIRELESS INSTALLATION - Mounts easily on gutters, walls, or fences—no trenching or wiring required for a clean, professional setup.

The Hunter WRCLIK Wireless Rain and Freeze Sensor is a durable, weatherproof irrigation accessory that instantly stops your sprinkler system when rain begins or temperatures drop to freezing. Designed for quick, wireless installation on gutters, walls, or fences, it features adjustable settings to optimize watering schedules and is compatible with most irrigation controllers. Ideal for homeowners and professionals alike, it ensures efficient water use and landscape protection year-round.

Specifications

ASIN	B00FYRW3XQ
Best Sellers Rank	#10,852 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #44 in Automatic Irrigation Accessories
Brand Name	Hunter
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (1,468)
Global Trade Identification Number	00611698160053
Included Components	WRCLIK Controller
Item Type Name	Water Controller
Item Weight	14.4 Ounces
Manufacturer	Hunter Industries
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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