Open a External Electric Analog Lock Door?

[ntapia (Nelson Tapia)]

Hi,

I need to open an external door that has an older eletrical 12v lock that opens with an on/off analog Doorbell. I want to install Ring Doorbell and when someone calls I could open the door remotely activating an smart switch on/off that’s works with Samsung SamartThings.

Thanks.

Nelson.

[JDRoberts]

Sure, people have done this in the past when they live in an apartment building and there’s a buzzer they need to use to let someone in. You will need to wire an additional device into The circuit so it depends on if you live in a building where you will be allowed to do that.

Here’s one example (the topic title as a clickable link):

Controlling ancient 4 wire apartment buzzer (un-lock only)

Ever since I moved into my co-op I wanted a way to upgrade the existing 4 wire apartment buzzer / intercom system to allow the outside door to be unlocked with my phone. I pulled the trigger on the SmartThings hub and a few add ons and I was thinking of ways to integrate the two together. The device I was considering to make this possible is a Linear FS20Z-1 and I was looking to combine it with this: I’m not an electrician but when I took the panel off it appears to be a 12v and three other wires, each one triggering an action using a momentary push button. What I’d like to do is wire in the Linear device which seems easy enough, power ground and neutral (which I’ll get from an outlet and a hacked PC power cord, then using the two “blue” wires, create a jumper from the 12v to the “d…

If you are not allowed to add something to the wiring, then there are automatic button pushers, essentially a robot finger, that you can add inside your own space that will push the button of the existing system. If you are interested in that approach, let us know and I’ll give you more information on that.

[HalD (Hal)]

Robot finger reminded me of this