LAS VEGAS – Homeowners (and probably insurance carriers!) can rejoice at the Guardian automated leak prevention system, shipping today. The system is entirely do-it-yourself and requires no plumbing to be done at all. Simply clamp the main unit onto the pipe where your water main control valve is, and then set the Wi-Fi-connected sensors in strategic locations around the house. When one of the sensors detects a leak, the system’s automated motor closes the valve to prevent water damage from a constantly-fed open pipe. Each sensor has a 15-year battery inside it. We think that’s long enough to get your money out of the system and move on to something else cool in 10 years! Guardian also includes a temperature sensor to help prevent against water damage from frozen pipes. At 45F the system starts sending alerts to your iPhone; at 40F it shuts off your water. The iOS app can also be used to control and monitor the system remotely. A kit with the battery-backed base unit and three Wi-Fi sensors is priced at US$399, and you can add more sensors whenever you like.