IP Door sensor

[renardi]

Hello,

I was wondering if there were door sensors, who could connect to 3CX and dial phone when a door is opened?

I would like to use this in a store, to know when someone has entered.

Regards,

Christophe.
Belgium

 

[flurk]

Hi,

if this can help you: in the past week i built a SIP-doorbel, using an old handsfree analog pots telephone, connected to a grandstream ATA HT508 (or GXW400x).
The essential concepts are: the hookswitch of the telephone becomes the doorbell; in the ATA-box the field "offhook auto dial" should be configured.
My setup works fine; i can even transfer the doorbell to an IVR or a voice-mail recorder.

For your system, you could do exactly the same: the hookswitch of the telephone becomes the door sensor. when the door opens, automatically a specific tel. number is dialed.

If you want to know more, contact me and I'll send you the detailed recipe of my contraption.
I'm even thinking of building a SIP dooropener. In this case the telephone bell will trigger an optocoupler, which in turn will trigger an electromagnet, which controls the door.

Greets,
Flurk,
Brussel

 

[renardi]

Thanks Furk.

Is there another way to simulate a hookswitch on a ATA device, lets say by pressing a button?

 

[flurk]

Hi,

first, I never gave it a thought to connect a switch directly to an ATA device, but that must be possible. A simple switch with a series resistor might work. You might have to think about how to interrupt your "call" after a given time. I think you will have to build an electronic circuit there with a simple timer.
I used a complete telephone for my setup, because i needed also the handsfree functionality.
For the dooropener, i will also use a complete telephone, that i modify and of which i will use in the end only the ringer-parts.

Secondly, as a "switch" you might use anything: pushbutton, microswitch, reedswitch...

regards,
flurk