Bluetooth Low Energy

Please note!
Currently, the BLE proxy for SMLIGHT SLZB integration is under development and has not been merged into theon Home Assistant core.side and BLE proxy support is expected in the 2026.8 HA release. Therefore, by activating "Proxy advertisements" now, you will not start receiving BLE notifications ininside HA.
PleaseHA followuntil thisyou PRupdate HA to be2026.8 informed when the BLE proxy will be added on the HA side https://github.com/home-assistant/core/pull/174710release.

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:

1. Have SLZB-OS v3.3.3.dev7 or later
2. Have Home Assistant with2026.8 SMLIGHTor BLE Proxy support later
3. Have active SMLIGHT SLZB integration
4. Have "BLE"BLE" and "Proxy advertisements"advertisements" enabled in SLZB-OS