Sensirion BLE
sensirion_ble
Integrates sensors talking Sensirion's BLE protocol into Home Assistant.
In Apple Home through HomeKit Bridge
What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.
| Entity | Shows up as | Note |
|---|---|---|
sensor | Sensor (CO₂, humidity, temperature) |
What people report
Sensirion MyCO2 and SHT4x gadgets work through BLE advertisements. The SHT31 dev board was not recognised.
- Works2
- Requested1
| Device | In Home Assistant | In Apple Home | What they said | Source |
|---|---|---|---|---|
| Sensirion MyCO2 Gadget | Works Local | Listed in docsSaved copySupported devices: Sensirion MyCO2 Gadget; Sensirion SHT4x Smart Gadget; Sensirion SHT31 Gadget (untested). Excerpt saved from home-assistant.io on 2026-10-23. | Docs | |
| Sensirion SHT4x Smart Gadget | Works Local | Listed in docsSaved copySupported devices: Sensirion MyCO2 Gadget; Sensirion SHT4x Smart Gadget; Sensirion SHT31 Gadget (untested). Excerpt saved from home-assistant.io on 2026-10-23. | Docs | |
| Sensirion SHT31 Gadget | Requested Local | Not recognised; library supports only some gadgets; closed staleSaved copyThe problem I'm trying to connect a Sensirion SHT31 temperature & humidity sensor to Home Assistant through the Sensirion BLE integration. Steps to reproduce: 1. Enable and configure the bluetooth integration in Home Assistant. 2. Enable bluetooth on the sensor by clicking the button for 1sec. The bluetooth icon begins to blink. 3. Check home assistant for newly found devices. 4. Alternatively, try to add the Sensirion BLE integration. Expected result: 1. The sensors shows up as a device in Home Assistant. Actual result: 1. Other bluetooth devices in the vicinity are found, but not the … Excerpt saved from GitHub on 2026-10-23. | Issue #141981 · 2025-04 |
Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.
How it connects
Local push
Talks to the device on your network, and the device tells Home Assistant the moment something changes.
Found automatically over
- Bluetooth
Details
| Installs (analytics) | 137 (0.02%) |
|---|---|
| Added in | Home Assistant 2022.12 |
| Set up in the UI | Yes |
| Maintainers | @akx |
Devices listed in its documentation
- Sensirion MyCO2 Gadget
- Sensirion SHT4x Smart Gadget
- Sensirion SHT31 Gadget (untested)
In ReReHome
Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.
Bridges get their own settings page listing the accessories behind them.
