Shelly1 wiring 110v sw for buzzer along with door opener

Question

I’ve got shelly1 wired up to allow me to remotely open my door. I’m trying to see if I can use SW to detect the buzzer (along with a custom circuit). Here’s what I have without door buzzer detection:

Neutral - N
110 Hot - L
SW - so far unused
I - one side of door open button
O - other side of door open button

This works well. I’m trying to figure out how to wire in a door buzzer press. I have a circuit to convert the door button press to a DC signal. But that signal is not related to 110 hot, so I’m stuck. Help appreciated.

Make sure you are using a Shelly model that is UL-Listed. Things which are not safe or legal to be installed in North American AC mains wiring. — Harper - Reinstate Monica, Dec 04 '21 at 02:42

score 0 · Answer 1 · answered Dec 03 '21 at 06:22

0

Use your DC circuit to drive a relay. Then from relay you can control your sw pins.

answered Dec 03 '21 at 06:22

mastermind

904
5
19

OK. But for relay, can I input 110 Hot on one end, and other end to SW? If so, do you know the current that will flow? Do I need high gauge wire or will it be very low current as it's just used to detect connection? – nachum Dec 03 '21 at 17:48

Shelly1 wiring 110v sw for buzzer along with door opener

1 Answers1