I am an electrician, I have a client who has an existing intercom system that currently controls two doors (door strikes, 24vac) at the same time. An outer door and an inner door.
I would like to build a circuit that with one push of the door open button on the existing intercom station, the outer door will buzz,
and with two consecutive pushes of same door open button the inner door will buzz for a preset amount of time.
In other words I need a circuit that will recognize two consecutive pushes and then it will close a relay for a short set of time (controlling the second door).
I would like to build a circuit that with one push of the door open button on the existing intercom station, the outer door will buzz,
and with two consecutive pushes of same door open button the inner door will buzz for a preset amount of time.
In other words I need a circuit that will recognize two consecutive pushes and then it will close a relay for a short set of time (controlling the second door).