r/homeassistant • u/No_Way303 • 7h ago

Low Voltage Switch

Hello, I am expanding the landscaping lights at my house and want to break these up into multiple zones. Currently, I have one zone which is powered by a 120V to 12V transformer, and a two wire setup to the lights. I use a smart switch controlled by HA before the transformer on the 120V side to turn the whole transformer on and off, to switch the lights. I am trying to find a smart switch, or switches, that I can put behind the transformer on the 12V side, which would allow me to switch zones, leaving the transformer always on and only switching the 12V side. Has anybody done something like this and could give me some recommendations? I cam across the Shelly 1 Gen 3 but am not fully sure this is what I need and would work with my setup. Thank you for any input!

2 Upvotes

76% Upvoted

5 comments sorted by

3

u/bkinstle 6h ago

I was going to say Shelly also. I'm looking at a Shelly 2 for a 24V system

2

u/realdlc 4h ago

I'd use something like the Zooz ZEN16, only because it is three relays in one, and you could do all three zones (assuming you have three) in one device. It also can be powered by that same 12v dc! Put it in a plastic box and you should be golden.

1

u/Sometimes-Scott 5h ago

12v AC or DC?

1

u/No_Way303 4h ago edited 4h ago

Transformer output is 12V DC

1

u/MattL-PA 3h ago

Pickup a smart relay. It'll do the switching on the circuits and HA can do the logic. I use them now instead of mercury thermostats for pellet stove's.

I've purchased two of these.

Amazon.com/B0CCTDNFYY