An GSM auto dialer is an electronic device that can automatically dial telephone numbers to communicate between any two points in the telephone, mobile phone networks. Once the call has been established the GSM auto dialer will announce verbal messages to the called party you can also receive both text message and call.
The GSM auto dialer has trigger 1 and trigger 2, both triggers have their separate text messages and voice message, if trigger 1 got opened or closed then its text and voice message will be sent to the stored telephone number, same like this for trigger 2 also, you can also activate and de-activate the system through message also.