We tinker so you don't have to. Got a problem? We'll figure out a solution using new, as well as tried and true, proven technology
Current project - using a Blues Notecarrier Cellular Controller to get SMS notifications via Twillio Messaging Service when a water level sensor detect abnormal states such as a failed sump pump. Essentially the NoteCarrier would potentially replace a security system and notify the homeowner of a failure in a particular part of the system via SMS (and perhaps other means such as email or automated phone call).
Other future tie-ins could be a rate of rise sensor near a furnace or attic. Motion detector - where movement is detected and images or livestream video is presented.
In all cases, a telephone headset battery would be the main source but could be charged by standard USB mini connector or solar panel charging.