Irritrol CL-100-WIRELESS Climate Logic Wireless Weather Sensor/Receiver Combo Built-in radios - For easy, wireless installation with less labor than wired systems Temperature sensor for monitoring air temperature - Shuts system off in cold weather Rain sensor - Adjustable for amount of precipitation to shut off system Solar sensor - Monitors the amount of the landscape site's sun exposure Weather SD card - Contains the 10-year, historical weather information for North America with location access by zip code or latitude/longitude