Home Heartbeat Awareness System

Home Heartbeat is a notification system that continuously monitors your home's electrical appliances, faucets and other household devices while conveniently sending status data to the "Home Key" keychain, via the ZigBee wireless communication protocol. The system's base station offers internet connectivity that allows for remote monitoring, and the device can also be configured to issue status updates through email or text messages to the homeowner's cell phone.

The system is built in a modular fashion, meaning the device can couple with many different types of (Home Heartbeat) sensors, as they become available. From the site:

The backbone of the Home Heartbeat system is a network of detection sensors: water sensors, open/closed sensors, power sensors, reminder and attention sensors. The sensors can alert the homeowner to a wide range of problems, including pipe leaks and flooding, opened doors and windows, and appliances that are left on. An additional feature is a water shut-off valve that can be controlled and activated by any of the sensors. Reminder and attention sensors can be set to alert homeowners about easy-to-forget tasks, such as changing batteries in smoke detectors or cleaning out the gutters.

According to Fast Company, the basic starter unit offers only one sensor as well as the base unit and keychain and will retail for $149 US.