walmeck SONOFF 4CH R3/PRO R3 ITEAD RF 433MHz 4 Gang WiFI Switch 3 Working Modes Inching/Self-Locking/Interlock WiFi Smart Switch for Home/Nest Smart Home - Walmart.com
SONOFF - Main differences between the R2 and R3 for 4CH &... | Facebook
Sonoff 4ch Pro R3 / 4ch R3 Smart Wifi Switch 4 Gang Light Switch 433mhz Rf Remote Wifi Relay Ewelink Work With Alexa Google Home - Automation Modules - AliExpress
SONOFF 4CH PRO R3 4 Way Wi-Fi Smart Switch Wireless 433MHZ RF APP Remote Control | eBay