In case RF433 isn't going away - Sonoff RF bridge - NotEnoughTech
Wholesale SONOFF RF Bridge 433 Gateway WiFi Smart Switch App Remote Control Works with Amazon Alexa Google Assistant From m.alibaba.com
Sonoff RF 433MHz Smart Home Security Kit with RF 433Mhz to WiFi Converter Hub
COMUNICADOR RF SONOFF RFBRIDGE433 SMART INALAMBRICO WIFI PARA IOS Y ANDROID COMPATIBLE CON ALEXA/GOOGLE HOME/NEST/IFTTT WIFI 2.4GHZ HASTA 16 DISPOSITIVOS RF 433 MHZ SOPORTA CONTROL REMOTO PARA INTERIOR DE 433MHZ (MODELO REMOTE
Sonoff RF Bridge 433 black (IM170619001) Convert 433MHz to WiFi
The Sonoff 433MHz RF bridge with Home Assistant – Inspect My Gadgets