Hunter Mini-Clik-No Rain Sensor Normally Open
The world's most simple, accurate, rugged and reliable rain sensors.
This sensor is designed to be used with a specific variety of controllers which are wired to utilize a sensor that is normally open. (The majority of controllers utilize a normally closed switch)
There's nothing more embarrassing – or more wasteful or costly – than an irrigation system that runs when it doesn't have to: in the rain. Mini-Clik provides the simplest, most effective way to prevent irrigation sprinklers from coming on during or after precipitation. It easily installs on any automatic irrigation system, then shuts sprinklers off in a storm and keeps them off, automatically compensating for the amount of rainfall that occurred. Disks absorb water and expand proportionally to the amount of rain that fell (e.g.; a small cloudburst would result in little absorption; a 6" thunderstorm would lead to more absorption and expansion). As the moisture-laden disks expand, they eventually activate a switch that interrupts the circuit from the irrigation controller to the solenoid valves. Once dry, they contract and release the switch. Thus, Mini-Clik automatically resets without ever affecting your irrigation controller. There's no better way to ensure that a sprinkler system isn't watering when it isn't necessary.