Sonoff Mini - great switch, but - NotEnoughTech

Sonoff Mini comes with DIY mode and lets you control your lights via wall switch as well as the internet

Sonoff ZB Mini (ZBMINI-L) but without neutral? - NotEnoughTech

Sonoff POWR3 5500W Controller - It's a Monster - Scargill's Tech Blog

Cheap Sonoff-lookalike BASICs and Aubess Zigbee - Scargill's Tech Blog

Sonoff ZBMiniL2 is taking ZigBee to the extreme! - NotEnoughTech

Even smaller ZigBee switch: Sonoff ZB Mini Extreme (no neutral)

A Much Smarter Light Switch

SONOFF ZBMINIL2 No Neutral Zigbee Smart Switch Review

Sonoff MiniR4 is extreme(ly) small - NotEnoughTech

MINIR4 - SONOFF Official

SONOFF ZBMINI Extreme Zigbee Smart Switch Wiring & Pairing Tutorial - Rocker light switch