looking for a dry contact switch

[upup]

I got a water irrigation system. Sometimes we don't have water, and when we are away, and see on the groups that the water is off, want to switch off the irrigation. I currently use a switch that is connected at the rain sensor. So I want to place a smart switch here, to give a dry contact, or operate a 220vac relay. I want to operate this from anywhere.
I was thinking of a water pressure switch but so far could not find one.

 

[hilton]

Surely a flow sensor should work?

 

[Tinuva]

Zigbee Dry Contact Smart Switch ZG-001 Review

AliExpress Reviews: Zigbee Dry Contact Smart Switch model ZG-001. Cheap multichannel relays for DIY projects with no output voltage.

smarthomescene.com

Also look, I think Shelly1 can be wired for dry contact.

Otherwise use with a contactor?

 

[fxit_man]

Would this work for you? https://www.geewiz.co.za/home-fashi...pen-and-close-gate-from-app-alexa-google.html

 

[upup]

On the link that @Tinuva send, the person cut the relay contacts in order to make them a dry contact.

May i ask 2 questions. Say the switch is "on" before load shedding, after power restores , what happen to the switch.
And I bought a geyser timer which work on smart life app. If I by a device from say Geewiz, haw do I know if this switch support on smartlife app, or do some of you use different apps, for a house.

 

[Bliksis]

I use Sonoff Basics for my irrigation. It doesn't know when the water is off, though. They're just timers. But can be used to switch off remotely.

 

[PowerFactor]

The cbi astute relay should work. You need to connect the 220V to the relay and wire the power for the irrigation via the dry contact.

 

[fxit_man]

On the link that @Tinuva send, the person cut the relay contacts in order to make them a dry contact.

May i ask 2 questions. Say the switch is "on" before load shedding, after power restores , what happen to the switch.
And I bought a geyser timer which work on smart life app. If I by a device from say Geewiz, haw do I know if this switch support on smartlife app, or do some of you use different apps, for a house.

There should be a power-on state you can set in settings. Set it to Last-state, ON or OFF when power resumes.

Sonoff produts use the eWeLink app. Your more generic "Tuya" devices use smart life.

 

[upup]

Surely a flow sensor should work?

a Pressure switch can work, but I struggle to find one. there is a Arduino one , but it needs a Arduino.