Hardware device to open/close relay?

Hardware
1

I have an industrial pump system (think small splash pad) that operates on a primitive mechanical timer in “auto” mode, but has a wire loop that enables / disables the pump when in “hand” or manual operation. so effectively, I can set it to auto, and use the mechanical timer, or set it to hand, and open or close the circuit on a single din rail jumper to trigger the on / off of the pump.

I’d like to use HA to automate the on/off based on time and weather parameters, and also enable manual remote overrides for on or off.

I’m looking for a hardware device that can be controlled by HA, that will just open or close the circuit. Z wave is pre existing in this location, but could also be hardwired somehow. I believe it is 12vdc, but to be honest, I’d have to check if that is critical.

any ideas?

2

Voltage is always critical when building something.
Also add some diagrams of what the circuit looks like and/or pictures.
It will make it a lot easier to help

1 Like
3

And current - especially when it comes to relays.

4

Very true. Updates:

24vac, with a 13mA load. It’s only a signal wire going into a VFD for the main 3 phase 208V pump. So any ideas?

I figured I could use a zwave outet like this: fibaro wall plug

and wire an extension cord into this socket: dayton octal relay socket

which would send 117vac into this relay: omron relay

which then would pass the 24vac through, close the circut and start the pump.

Is there a better, more simple way? Like some shelly device or something that would run on the 24vac, and pass it through when told to via wifi?

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5

Plenty of Z Wave dry contact relays… an example…

Just search Amazon or eBay for “Z Wave Relay”