Which side is L1 and which is L2 it doesn't say? (I'm installing a dimmer instead) : r/DIYUK
Remote Home Control System 2 Way Smart Led Dimmer Switch Wi-fi Triac Dimmer Module Works With Push Dimmer Switch - Buy Dimmer Switch Module,Wifi Smart Switch With Dimmer,2 Way Dimmer Module Product
Unterputz LED Dimmer - Triac - max. 300 Watt - Phasenan- und Phasenab - Ledleuchtendiscounter.de
Wifi-Unterputz Dimmer 3-200W/VA - Tradim® B.V.
LED Dimmer Unterputz-Einsatz GreenLED · Auto-Detekt
wiring - Replacing standard light switch with dimmer - Home Improvement Stack Exchange