Homebridge-RPi-RTS, a plugin to control Somfy RTS devices (shutters, blinds, awnings, ...) with a Raspberry Pi and a simple 433 MHz transmitter. Details and disclaimer in the comments. : r/homebridge
Home automation system remote control - KEYGO 4 RTS - SOMFY - for access control / for roller shutters / waterproof
X2 Remplacement de la telecommande universelle pour Somfy KeyGo 4 RTS les modeles de telecommande 433,2MHz Rolling Code - Cdiscount Bricolage
Somfy Rolling Code Compatible Remote Control for Garage Doors - China Cloning Key Fob Universal, Rolling Code Remote Control | Made-in-China.com