Sonoff RF Bridge 433 · arendst/Sonoff-Tasmota Wiki · …
2019-6-28 · In addition to the ESP8266, the bridge has an RF chip (433MHz) for which there is a custom firmware commonly referred to as 'Portisch'. The original Sonoff RF firmware is limited. By updating the firmware of the RF chip (EFM8BB1 MCU), new features and …
