1)Intruder. 2)Smoke. 3 ) Water over flow 4) Gas Leak.

In case any breach of security, the device takes the following action.1) Sound and alarm. 2)If the alarm is not switched off within 30 seconds, that means nobody is available, the device must take some more action. After 30 second, the device will dial-up the pre programmed telephone number, and will deliver the emergency message stored into speech IC. You can change the telephone number yourself any time. Even you can feed your mobile number.

its just a brief idea...i want its report n circuit diagram...