You can add extra sensors as needed ... which is about on a par with other similar systems. The Yale Sync Smart Home Alarm Family Kit is mostly bits of white plastic, but they're not unattractive ...

HSA 3000 alarm system includes: 1 x siren/strobe, 1 x remote controller, 1 x PIR, 1 x door/window contact, all batteries and fixings, & 2 x warning window stickers. Accessories available: door/window ...

HSA3500 is a communicating alarm system which will send one of 4 pre-recorded messages to 6 people in the event that the alarm is set-off. The system can be remotely accessed by telephone via a unique ...

according to a scale published by Yale University — was preceded by a low rumbling that rattled windows and started a chorus of neighborhood dogs barking into the evening. SpaceX rocket launches from ...