relays

  1. Driving a 12V DC relay

    Hi, we need to open an electric doorlock from the pbx/phone that is driven by a 12VDC relay. What 3CX SIP devices do you know for this? Thanks

  2. Pre-emptive trigger for doors?

    So the system is as follows. A 2N Helios door phone button press calls a ring group. At the first phone picked up, the person pushes a line key that sends an apprpriate code to the doorphone relay, which sends a hash to the lock which opens the door. I'd like to do this pre-emptively so that...
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