Up to 4 numbers can be programmed using the keypad. You can record a spoken message of max 12 sec. length using the built-in microphone. 4 alarms within a minute will trigger the alarm-receiver to send signal to the telephone module. The yellow light on the receiver willl indicate this.

The module will call first number (typically your cell phone) and play the recorded message. The module will call next number and so on. If a number is answered it will not call this number again, if it is busy it will try calling 3 more times. 

The module is easily installed and easy to use. The alarm receiver supplies the power, and the telephone connection is made using the supplied cable (rj11).