This app is designed to work with BFT brand gsm intercoms version 3.5. Please note that the hold open command latches the intercom output relay on. For many gate systems which are setup for automatic closing, this will trigger the gates to open by sending a special sms code, and the gates will stay open until the unhold/close button is pressed. This command also sends a special sms string to the intercom to release the relay to its normal state.

If the installer fits a limit switch or reed switch and connects to the input on the intercom, you can use the check gate status button. This also sends a special command by sms and the intercom will reply to notify if the gate is open or closed.

The trigger gate button speed dials the gate intercom sim phone number for you. It is an easier way to open your gates than finding the number in your phone directory. If the installer had stored your phone number in the intercom memory for caller id access, then this will work.