It just works, it rains and the sprinkler don't come on.. good news. for the price this thing work good. another feature i like is that if the sensor is wet your sprinkler won't come on, usually the soil is still wet after a day or two of a good rain.

good for recent rains and works ok if it rained heavy the day before, but if it rains for several days, you would think its going to keep your sprinkles from running for a few days, but it appears to only sense recent rain and then kicks back in.

Added this to an install on a Rainbird control. Works great. Shuts the watering program down when we get rain. Probably won't get used a bunch in Phoenix but during monsoon season nice to conserve water

Works so far. Basic two wire open/close sensor that you wire in series with your valves. Easy to hook up. Long wire so you can run it pretty far if you need to. No complaints so far

Replaced my old sensor with this new sensor and hooked it up to my Rachio Controller. Works perfect. The sensor is about 60 feet from the controller. I connected the new sensor wiring to the existing wiring with wire caps/tape. I did not even bother to cut the excess leftover wiring on the new sensor. Just covered it with plastic bag. (i kept the excess wiring because I may need to move it in the future and may need the extra length).

To test the sensor with the Rachio controller, you just press the lever/button on the top side of the sensor, and then you will get a "sensor activated" message from the Rachio controller (you'll get a message on your cellphone Rachio app). When you release the button, you'll get a "sensor deactivated" message.

Ran into one problem during a rainstorm. I kept getting continuous activated/deactivated messages every 30 seconds on my cellphone app (Rachio). After looking at this further, I never adjusted the "vent ring" or "rainfall" setting. The vent ring was wide open, and this caused water to drain quickly. So, during the rainstorm, water would fill the sensor, causing a "sensor activated" message from Rachio controller, then water would quickly drain out thru the open vent ring, and then the Rachio would send a "sensor deactivated". This cycle kept going on every 30 seconds. Just make sure you experiment/test the best setting for the vent ring and rainfall setting. I ended up blocking about 90% of the vent opening by rotating the ring.

BTW: Check with your city/county water department for rebates. Our city gives 75% rebate when you purchase water conservation devices.