Thanks!
True, plenty of functionalities unused but from an investment/cost perspective it's virtually the same as any other shelly (1, 1L etc).
I'm relatively naive to electronics - could you expand on what could be the options in terms of getting a relay or rectifier? how about the wiring - it should be placed on out 1 to drive the energy for the door to open, correct? If I understand correctly the door's electric system would have to power the shelly and the relay/rectifier?
thanks!
Hi - this is correct, no detection of door bell signal required.
thanks for the suggestion!
When you say the Uni is challenged do you mean impossible to use in this context? Just because I have 2 issues - I don't have the regular 220V power supply next to the door button and if I'm able to pull one in addition I don't have the "ground" in my home electrical setup (could I use shelly 1L?)
thanks for your help thgoebel!
Hi thgoebel,
thanks for your feedback. following up directly to your points:
(a) The inputs IN-1 and/or IN-2 of the Shelly UNI are NOT intended to power the unit, but to attach sensors, switches or buttons. this is clear! I will need to use red and black wires (1 and 2/VCC and N) to power the uni
(b) Widely used solenoids for opening of door latches are controlled by buttons, not switches, cause the solenoid needs to be activated for some seconds only. Thus, programming of an “auto off” timer with 1 or 2 seconds will be appropriate. ok great, this means I need to think about this as a button rather than a switch. The reason why I brought this up is that on the diagram that comes with the uni "IN1" and "IN2" have depictions of wiring for button and/or switch so I was unsure.
(c) Could you please add more details to your question above? given that this is a button it's this doesn't apply anymore as the resistance is only needed if we are talking about a switch, which is not the case
(d) Both outputs of Shelly UNI are semiconductor relays, capable to switch 100mA maximum. This is not sufficient to drive an ordinary door solenoid! An additional relay will be necessary. this is where I have questions. The wiring diagram figure 4b does not specify how to use the "OUT" (i'm aware OUT1 and OUT2 are wrongly switched in the diagram) so not sure how to wire it up to control the button with the shelly. Do you have a wiring scheme for how to use an additional relay (e.g. Shelly 1 or 1L?)
thank you very much!
Pedro
Hi all,
I want to install a shelly uni to open the building's entrance door via mobile so I'm looking to install a uni as the doorbell system runs on 12 V AC.
When reading the wiring diagram it's clear that inputs 1 and 2 need to be used for powering the uni but to wire the doorbell i'm not sure if this is a switch or a button as this is a wall knob with a spring to bounce the knob back to the original position following its use to open the door. My guess is switch as you "close the circuit" even if for only half a second but wanted to confirm this understanding with experts in the forum. If this needs to be seen as a switch can you advise on what resistance to use?
thanks!
