The Advent Controls GSM Door Entry Intercom allows callers to your property to speak to you no matter where you are.  When connected to a door or gate you can grant a visitor access using your telephone.  Using the GSM network, the unit requires only power to operate making installation simple.The door output relay can be activated by pressing your telephone’s star * key during a call or by calling the system from any registered telephone with caller ID enabled (Open on Call)The Advent Controls GSM Door Entry Intercom System Key Features:

• Internal Aerial for Simple and Fast Installation
• Simple SMS Programming using Intuitive Commands
• High Audio Quality
• Space for up to 384 Numbers
• Dial-to-Open Access Control
• Lowest Price GSM Intercom on Market

Calls are dialled in the order in which they are added.  The numbers are dialled sequentially until a call is answered and rejected (hung-up) or a call is answered and the * key is pressed or until all of the numbers have been dialled.  To activate the output relay and open a door or gate the call recipient should press and hold the * key on their phone until the call has ended.

The maximum ring time (the time between dialling and call pick up) can be set using the RTIME command.

The maximum call length is set by the CTIME command.  If the call is answered by an answering machine and the line goes quiet the system will hang up the call after the time set by the SILENCE command (default 10s) and it will proceed to dial the next number.