Bought a relay switch from Sonoff only to learn that it doesn't do what I expected it to do :(

So bought this (https://sonoff.tech/en-nl/products/sonoff-mini-duo-l-2-gang-zigbee-smart-switch-mini-zb2gs-l)

Fitted what I needed (no neutral and detach mode) only to learn that the detach mode also means that no state changes can be detected by the dumb lightswitch.

So I did get to make the smart lights keep the power and remember their state but I can't toggle them with the lightswitch.

Another 20 bucks wasted.