There's nothing more embarrassing, wasteful, or costly than an irrigation system that runs when it doesn't have to - in the rain. And the simplest, most effective way to prevent your sprinklers from coming on during or after precipitation is the Mini-Clik. 

Easily installed on any automatic irrigation system, Mini-Clik shuts sprinklers off in a storm and keeps them off, automatically compensating for the amount of rainfall that occurred. Disks absorb water and then expand proportionally to the amount of rain that fell (e.g., a small cloudburst would result in little absorption, a thunderstorm with 6" of rain would lead to more absorption and thus more expansion). As the moisture-laden disks expand, they eventually activate a switch that interrupts the circuit from the controller to the solenoid valves. Once dry, they contract and release the switch. Thus, the Mini -Clik automatically resets without ever affecting your controller.

Built to withstand the harshest conditions, there's no better way to ensure that your  system isn't watering when it isn't necessary - no wonder the Mini-Clik name has been synonymous with rain sensors for more than two decades. 

Model #502-NO 

The standard Mini-Clik model, for use in most applications. Constructed of high impact thermoplastic and aluminum. Wired normally open (for Toro Controllers)Simple clik-stop settings accurately measure rainfall in quantities of 1/8" to 1". Reset rate is adjustable.