Potential free zigbee switch?

[waltervl]

I want to control my electrical garage door with a Domoticz controlled switch.
It can be controlled by a RF remote and also a Normally open potential free push button type switch (like a doorbell switch).
I could not find a Zigbee alternative to the Bluetooth relay I could find (https://www.domoticz.com/forum/viewtopi ... 65&t=28216)
But this Bluetooth solution is missing distance range and a secure protocol so I dropped it.
I am also not interested in adding an RFXCOM solution, I have Zigbee

Do any of you know a Zigbee controlled relay (potential free!) normally open?
Else I have an unused KSentry powered zigbee on/off relay switch that I can modify (remove the 220V from the output). I have to saw in the circuit board to do so, so I feel happier to use an off the shelve solution...

Anyone a good idea?

[waltervl]

For your information, these are the modifications I plan to do:
Cut the board on the red drawn line to break the 220V lines.
Solder a connection (blue line drawn) from the loose relay pin to the output line.

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[Thorgal789]

Lol nice hack ^^.
You can try the xiaomi wireless relay

The XIAOMI Aqara LLKZMK11LM Two-way Control Module Wireless Relay Controller is a rectangular shape, in a total white color. It has a dimension of 49.3 x 46 x 24mm and has a total weight of 50g making it very light. It comes with two independent relay channels which can either work together (in latching) for polarity reversing or individually (in pulse/hold) to control different electronics, such as one channel for garage door controller unit, the other for entry lights. Easy programming & easy to use DIP switches working mode selection between pulse / momentary, hold/toggle and latching mode

"garage door controler" for me, if you remove the red shunt, it will be free potential.
But I haven't one to test.

[waltervl]

Thanks, I didn't know it can be made potential free.

[waltervl]

I received one and connected just to power and measured it. It looks it will do the job. Also nicely recognized by the ZiGate device and plugin as a switch (2 in fact) so now go to the garage and connect it to the garage door

[whitecube]

But domoticz doesnt detect the relay, am i right?

[Thorgal789]

Seriously ?
Because I have found some forums recently with this device, and some users have found a voltage > https://community.hubitat.com/t/new-xia ... l/13335/38

[waltervl]

Good warning, I have to check again. I haven't installed the switch yet but I do not recall finding high voltages when testing.

[whitecube]

my xiaomi home app detect the relay, but domoticz didnt show it under devices. with other xiaomi or aqara devices it works.

[RonP]

Is there a way to get the 2 channel relay to work within Domoticz? Some kind of extra plugin or something?

[Thorgal789]

Yes, it seem it works on other plugins, zigate/zigbee2mqtt/deconz.

[Huupke]

Can we request the support for the '2 channel relay'(LLKZMK11LM) somewhere? It would life much easier instead of using the smartplugs everywhere.

[waltervl]

There is support when using the various zigbee plugins. What plugin are you using?

[Huupke]

I'm not using any plugin I guess because I haven't installed anything on top of core Domoticz. I'm using a Hue and Xiaomi gateways so I would love to have the relay supported directly from Domoticz.

[tcarnal]

Hi I'm New here but saw the Potential free problem I too was having and have found a solution that works for me.
I use some Aqara LLKZMK11LM modules and those are NOT potential free without the Red Wire unfortunatelly.

As my intention was to use it to open my Frontdoor StrikeLock running on 12Vac the 230Vac on the relais could pose a slight smoke problem.
Due to the fact I have already 12Vac my thoughs where isn't it possible to power the LLMZMK11LM with this as well.
Sort Answer no not directly.
But!! after some messuring it does run on 5Vdc.
So a ac-dc stepdown converter to get the voltage from 12Vac to 5Vdc solved it.

Attached some pictures of the location to where to solder the wires to power the module.
After this mod the pins in the relay are without power and it can now switch low voltage without issue
I have placed some tape on the first 3 connectors so using them is not possible anymore.

Hope this helps some of you
Thijs

[Thorgal789]

So you can power on the device with 5/12V ? Realy Usefull ^^

But it still complicated to use it as free potential contact, even now the tension is 5/12 V ?

[tcarnal]

The 5V isn't measured on the Relay pins (L1 and L2 Contact) anymore as it was with the 230v
It's most properly because the 230v part of the module is skipped.

So yeah it switches low voltage perfectly no extra voltage shown on my MultiMeter.

Measured the 5v Part of the print when attaching a load to the IN Contact (14vac) and the voltage didn't whent up.
Also the Relay when powerd L2 and L2 only showed the 14vac attached to the IN Contact

When nothing is attached the 5v isn't meassured on the L1 and L2 contacts

Only Downsite you can't use the L and N to power it anymore but in my case this is perfect as the Location where it's places only has 12vac and 12vdc

hope this answers your question

[Thorgal789]

Ha yesss, as you have removed the 220V the contat is now potential free.

[tcarnal]

[nikkikom]

Only Downsite you can't use the L and N to power it anymore but in my case this is perfect as the Location where it's places only has 12vac and 12vdc

Very useful mod. Thank you for sharing.

But is it still possible to use S1/S2 contacts to control the L1/L2 states?