I have a stairway light with two-way switching. I've replaced the upstairs switch with a momentary switch attached to CH2 of a Shelly 2.5. The downstairs switch is still the old toggle switch (as I don't have an adaptor plate for it), connected to CH1 and set to edge mode. Both switches independently click their relays. The light is attached to CH2, and is successfully toggled by the CH2 switch.
I'm trying to get the CH1 switch to also control the CH1 light. I've tried the "I/O URL actions", assigning http://192.168.1.151/relay/1?turn=on (the Shelly 2.5's static IP, which works in my browser, though I'd prefer loopback) to pretty much every trigger, but that doesn't do anything. Is there something that I'm missing?
