Specification :

Wireless GSM Home alarm system,S110:
The GSM Alarm System S110 with multi-functions. It integrated GSM Module inside, and almost all useful functions and features of the alarm systems in the worldwide markets. Also it with innovative and experienced functions and features to meet the required and potential demands.

The GSM Alarm System S110 is a new security protection solution. It is special for home, house and office and other applications. It based on Wireless GSM Communication network; it can alert you by SMS and calling.

The GSM Alarm System S110 supports two way voice communication and wiretap by intelligent technology. It can answer the incoming call as well as dial out to the others. It is very useful for user to create voice communication or listen in the houses.

The GSM Alarm System S110 with user friendly design idea, all operations and settings are visual and intuitive!

What you need is a SIMCard which supports Call ID function.