Use REST GET as a trigger

[MDAR (Stuart Hanlon, UK importer of Velbus hardware)]

Would the ClassicUI http service work for you?

(You don’t need to configure anything, just have it loaded, then use the unique name of the Item you want to change)

https://www.openhab.org/docs/configuration/ui/classic/

And create a command in the switch like the one shown here ?

How to change an openhab switch with http-commands?

Here is the reference on how to still do that in OH2 from a standard GET request. example from https://github.com/openhab/openhab1-addons/wiki/Samples-REST http://192.168.1.1:8080/classicui/CMD?My_Switch=OFF (the CMD moved to /classicui/CMD)

So a command to load into your switch might be —

http://192.168.xxx.xxx:8080/classicui/CMD?My_Switch=ON

Then use a DSL rule or NodeRed flow to turn the OH switch off again.