1M Two way double pole switch, 16AX/250V, black, connection with screws – Metalka
Double two-way switch, 16AX/250V, connection with screws – Metalka
2 Gang 2 Way Switch Connection | Two Way Switch Wire Connection - YouTube
Sonoff Dualr3 Dual Relay Wi-fi Smart Curtain Switch With Power Metering Voice/app Remote Control Double 2-way Diy Switch Module For Light/curtain/blin | Fruugo IT
On my two-gang light switch, why does the second switch only work if the other switch is also turned on? - Quora