Bluetooth Low Energy

Please note! To use this functionality, you need to update your Home Assistant to 2026.8 or higher and update SLZB-OS to v3.3.3.dev7  or higher. 

 General information 

 SLZB-OS supports receiving BLE advertisements for U series and Ultima devices (ESP32-S3 devices). Active BLE connections are not supported. Only support passive/active scanning. 

 The system consists of two parts: - SLZB-OS with "Proxy advertisements" enabled. Responsible for physically receiving BLE packets and sending them to HA. - SMLIGHT SLZB Home Assistant integration. Manages scanning on the SLZB-OS side, receives raw BLE and forwards them to the HA core. 

 

 BLE proxy 

 BLE proxy uses port 5050 so please make sure it is not blocked on your network! 

 SLZB-OS supports proxying BLE packets to Home Assistant using optimized UDP protocol. 

 To use BLE proxy you need: 

 

 Have SLZB-OS v3.3.3.dev7 or later 

 Have Home Assistant 2026.8 or later 

 Have active SMLIGHT SLZB integration 

 Have " BLE " and " Proxy advertisements " enabled in SLZB-OS