What are the advantages of Zummer-GSM as compared to other intruder alarms?
The advantages are: • Only Zummer-GSM lets you control and listen-in your phone line. Whenever you are, Zummer-GSM instantly notifies you as your phone line is activated, informing you about the number dialed. Just after that, by placing a direct call to Zummer-GSM you can listen to the conversation over the controlled phone line. • We have been doing our best to ensure Zummer-GSM is convenient to use and reliable in terms of delivering alarm notifications. When a sensor goes off, Zummer-GSM sends you an SMS-message and makes a direct call to ensure you are informed. In addition to that, if you are out of the cellular coverage and not available, the system will call you until getting you on the phone. This ensures that you are informed about alarm events as soon as possible. • Zummer-GSM is protected against power shortages. • Zummer-GSM is supplied with a high-sensitive microphone with operation range of 5 m. This means you are able to listen to conversations at distances of up to 5 m
