entry telephone

I have in place a Videx 836m for the door and just added a second one for the gate is all working fine but I added a 12V DC relay so that I can open the gate on 0 when called in but I can't understand where to connect the NO and C on Beninca control panel and the initial installer passed away I...

Good afternoon, I have recently moved in to a property which has a communal Intercom system installed but the handset in my flat was ripped off by previous tenant (for some unknown reason :mad:). I have bought a new handset which seems to be a upgrade of the last one (possibly discontinued) &...

Hi I am trying to replace a entel 300 door entry telephone with a bell 801 entry telephone I bought from amazon the wiring for the entel 300 is below 10v orange + white 0v white + orange C1 white +blue C2 blue + white On the bell 801 it has markings I R O T Z I have no idea which...