A rain sensor interrupts the irrigation program to prevent too much water as much as possible. The sensor works by means of hydro discs that expand when they get wet.

This rain sensor interrupts the irrigation program between 5 and 20 mm of rainfall, depending on the setting.
The drying time of the hydro discs can be influenced by the adjustable ventilation ring. Includes mounting bracket and 7.6 meters of cable.

Works on all 24V circuit breakers, including some battery operated circuit breakers.