Overview
Pre-release documentation. WallSense has not been officially released yet. The design, specifications and firmware can still change until release. Check smarthomeshop.io/wallsense/en for the current planning.
Looking for a different sensor? For a sensor in the ceiling, see CeilSense V2. To measure particulate matter, see UltimateSensor or UltimateSensor Mini with the optional SPS30. WallSense does not measure particulate matter.
WallSense is an in-wall sensor for round European back boxes. It sits flush in the wall and brings presence, position, air quality, ambient light, touch control and RGB LEDs together in one module. It runs on ESPHome, so every reading appears in Home Assistant as its own entity.
Key Features
| Feature | Description |
|---|---|
| Presence | HLK-LD2412 mmWave radar, also when you sit still |
| Position | HLK-LD2450 mmWave radar, up to three people |
| CO2 | Sensirion SCD41 |
| VOC and NOx | Sensirion SGP41, index 1 to 500 |
| Temperature and humidity | Sensirion SHT45 |
| Ambient light | Vishay VEML6030 |
| Touch | Capacitive touch surface behind the front |
| LEDs | One RGB status LED in the front, sixteen RGB LEDs on the back |
| Processor | ESP32-C6 with 4 MB flash |
| Network | WiFi, Ethernet with PoE, or Thread |
| Power | PoE over Ethernet, or 110 to 240 V mains |
| Mounting | Round 60 mm back box, 60 mm screw centers, front 55 × 55 mm, module depth 26 mm |
| Integration | ESPHome, native in Home Assistant |
USB-C is only for flashing firmware and is not a power option. WallSense has no camera.
What Works Today
The current firmware is a WiFi test build. It does not yet do everything the hardware can do.
| Function | Status |
|---|---|
| All sensors and both radars as Home Assistant entities | In the WiFi test build |
| Touch as a Home Assistant entity | In the WiFi test build |
| Rear LEDs with effects | In the WiFi test build |
| Ethernet and PoE firmware | Will follow with release firmware |
| Thread firmware | Will follow with release firmware |
| Radar tuning and radar zones | Will follow with release firmware |
| Front LED as a Home Assistant entity | Planned |
| SmartHomeShop.io integration and Room Designer | Planned |
| SmartHomeShop app and cloud firmware | Planned |
Options
WallSense is in development and is not on sale yet. The choices you make are about your installation:
- Power: PoE, or 110 to 240 V mains.
- Network: WiFi, Ethernet or Thread.
- Frame: Gira System 55 fits directly, adapter plates for other series are in development.
Package contents and ordering details are announced at release.
Documentation
- Quick Start: the shortest route from box to Home Assistant
- Installation Guide: back box, power, cables, fitting and placement
- Frames and Compatibility: frames, back boxes and countries
- Network Configuration: WiFi, Ethernet, PoE and IP address
- Connect via Thread: WallSense on your Thread network, with no WiFi or Ethernet cable
- Usage: daily use and automation examples
- Touch Control: gestures and touch in Home Assistant
- LED Lighting: rear LEDs, effects and the front LED
- Sensor Definitions: all entities in the current firmware
- Calibration: what you can adjust and how to compare readings
- Home Assistant Integration: ESPHome and the SmartHomeShop.io integration
- SmartHomeShop App: status of app support
- Troubleshooting: symptoms, causes and fixes
- Technical Specifications: all known values
- FAQ: frequently asked questions
- Warranty and Support: warranty and how to reach us
- Firmware: firmware status, updates and license
Local Operation
With local firmware, ESPHome brings the entities into Home Assistant and your data stays on your network. You do not need an account or a cloud connection.
Need Help?
- Support portal: support.smarthomeshop.io
- Discord: smarthomeshop.io/discord
- Contact: smarthomeshop.io/contact