How to simulate an intercom button press? (need to hack door intercom to open entry door into my building for delivery)

I did the basic door open button with a shelly 1PM

See the info here

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Hi there,

Could you share some more info with me. It looks like I have the same setup for my front door. I saw your pictures but couldnt find out how you connected your Shelly 1PM to which cables etc…

@augustose

Hello @SINCE1992 from both sides of the door opening button I connected the Shelly:O and Shelly:L1.

Then the Shelly:L and Shely:N to the electricity 110v.

Does that answer the question ?

Hi, I have intercom Laskomex LN-8.
Possible to make open the front door via sonoff switch without ringing from to street ?

Open your door and press the button that opens the door outside.
Do you hear a sound in the staircase?
Or if it’s too far have someone go down an listen/try open the door.

No. I possible to open the door from inside only if ringing my house outside.

My problem is that in big house not allowed using the numerical code, on street at Laskomex CD-2501 every time need to use the proxy key.

I possible to simulate on opener LM-8 witch smart switch ( sonoff wifi smart switch) ?

When ringing on my room

Switch 1. Pick up the phone

Switch 2. Open the street door!

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you can always try sonoff minir2 or zbmini… its should work like a charm

Hi, where to connect Sonoff.1 and Sonoff.2 on my Laskomex LM-8 intercom ?
Sonoff Wifi Smart Switch 7V-32V AC/DC will be ok and need twos pieces ?

Hello Laskomex,

Did you solve your problem ?

Can you send a picture of the other side of the board that is inside the phone?

Thank you

Hi, there is another solution Smart Domofon

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Hi,
I hope you are well.
I’m having a similar issuessue.

Can I use a Shelly on this?

I have an art 870 intercom sysytem. actually used a relay and a d1 mini to get door control and bell notifications when someone rings. And i have a telegram bot integrated for sending notifications to my phone when someone rings


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I think it’s possible.
What I can see: Base; Handset; red button; grey button, and handset lift switch;

  1. What is the button you must press to open the door?
  2. Can you press the button and open the door even when the handset list switch is pressed?
  3. Can you send a picture of the interior?

It sounds like a fantastic project!
Can you tell me more about the integration with the phone ?

Hi augustose!
I have Urmet 1172/55 intercom phone and want to make it smarter. Can you pls help me with it?
I found pdf and made some photos:


Thank you in advance!!

According to the pdf this is the open door button:

So unscrew the board and solder two wires to the button and to a relay or optocoupler.

Thank you for helping me.
Problem is that to be able to open the door I need to lift the earpiece. Contact is under the “hammer” on the right upper side of the phone. What should I do about it?

edit: so after I google lensed the QR code I found out I have type 1183/2 and in pdf says it can be opened while hanged.
If I solder those 2 wires to the back… can I use shelly 1? what is your take about powering that shelly in there? can I use power from the phone?

You can’t take power from the phone.
If it uses too much power then something might break.

Using a Shelly is simple but they are also quite large.
Not sure it can fit inside. An ESP and a relay/optocoupler will fit inside

Could be Shelly Uni used?
From the pdf of the phone I read this:

Power supply voltage: 36 ÷ 48vdc
Current consumption in standby: 3,0mA max
Max. current consumption: 70mA max

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