The irriGuard rain and freeze sensor, designed to control home irrigation systems, works with most sprinkler systems to disable watering functions when not necessary. The outdoor rain and temperature sensor, sprinkler controller, and wireless in-home display unit work together to monitor and control sprinkler systems remotely. Its freeze shutoff capability prevents watering in freezing temperatures, helping to ensure that pipes will not rupture. irriGuard. 866.501.7745. www.irriguard.com.Circle 16