If the idea of installing cables from a programmer is the reason why you have not installed rain sensors on your irrigation systems, we now have the solution. The Hunter Wireless Rain-Clik connects quickly and easily, simply install the receiver unit next to the sprinkler programmer, then install the transmitter anywhere the device can receive a certain amount of rain. No wires. An added bonus of Hunter's Rain-Clik is its Quick response function, which allows the sensor to close when it starts to rain.