Sonoff D1 Dimmer - an improved design? - NotEnoughTech
Support for Sonoff D1 Dimmer · Issue #7598 · arendst/Tasmota · GitHub
SONOFF D1 Smart Dimmer Switch Home LED Dimmable Adjustment Light Android IOS APP | eBay
SONOFF D1 WiFi Smart Dimmer Switch for LED Lights, Mini Module, Adjust Light Brightness for Various Occasions, APP/Voice/RM433 RF Remote Control, Compatible with Alexa & Google Home (With RM433) - - Amazon.com