Hi everybody, As mentioned on the post, I really would like help for transforming the switch on the picture so that I can have a dry contact. Thanks a lot for the help!

This device looks somewhat problematic at the conversion, do you have enough soldering skills to desolder temporarily relay so we can see how L PCB track connects futher? Here is marked photo: You could always try to just remove the connection here: and solder to that connection on the other side of the relay board, but it has to be done in a clean and safe manner, and I am not sure if you can do it, mains voltage is VERY DANGEROUS. Do you have and known how to use a multimeter?

>>20942457 I wouldn't bother with that, too dangerous + not worth the effort. Buy rather an ESP01S with a relay board + 220 supply. If you need to have dry contacts to control a garage gate, there are boards much more suitable for that.

You don't need to go with a DIY method, there are dry contact Tuya devices out there as well, for example OXT SWT10:

Modifying Tuya Mini Smart Switch for Dry Contact Use - Guidance Needed

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#1 20942457 03 Feb 2024 11:53

mistig mistig

Level 1

Post #1
20942457 03 Feb 2024 11:53

Hi everybody,
As mentioned on the post, I really would like help for transforming the switch on the picture so that I can have a dry contact.
Thanks a lot for the help!
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#2 20942632 03 Feb 2024 13:46

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #2
20942632 03 Feb 2024 13:46

This device looks somewhat problematic at the conversion, do you have enough soldering skills to desolder temporarily relay so we can see how L PCB track connects futher?

Here is marked photo:

You could always try to just remove the connection here:

and solder to that connection on the other side of the relay board, but it has to be done in a clean and safe manner, and I am not sure if you can do it, mains voltage is VERY DANGEROUS.

Do you have and known how to use a multimeter?

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
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#3 20943825 04 Feb 2024 08:45

Hgo11 Hgo11

Level 6

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Post #3
20943825 04 Feb 2024 08:45

>>20942457
I wouldn't bother with that, too dangerous + not worth the effort. Buy rather an ESP01S with a relay board + 220 supply. If you need to have dry contacts to control a garage gate, there are boards much more suitable for that.

https://www.aliexpress.com/item/1005006053150372.html

https://www.aliexpress.com/item/1005005898666081.html
#4 20990197 04 Mar 2024 18:19

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

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Post #4
20990197 04 Mar 2024 18:19

You don't need to go with a DIY method, there are dry contact Tuya devices out there as well, for example OXT SWT10:
https://www.elektroda.com/rtvforum/topic3986611.html

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
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Modifying Tuya Mini Smart Switch for Dry Contact Use - Guidance Needed

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