Ecowitt WH46D 7-in-1 CO2 and Air Quality
Ecowitt · WH46D
The Ecowitt WH46D is an indoor air quality monitor with a built-in display. It measures CO2 with an NDIR sensor, PM1.0, PM2.5, PM4.0, and PM10 particles, plus temperature and humidity. It is a very complete option for keeping track of air quality at home, in the office, or in enclosed rooms, especially if you already use the Ecowitt ecosystem or want to integrate it with Home Assistant through a compatible gateway.
USB
✓ Pros
- Measures CO2 with an NDIR sensor
- Measures PM1.0, PM2.5, PM4.0, and PM10
- Includes temperature and humidity
- Built-in display
- Very complete for indoor air quality
- Integrates with Home Assistant via Ecowitt gateway
✗ Cons
- Designed for indoor use
- Needs a compatible Ecowitt gateway or console for advanced integration
- Not Zigbee or Matter
- Not direct WiFi
Compatibility
Home Assistant
Specifications
| Model | WH46D |
| Measurements | CO2 NDIR, PM1.0, PM2.5, PM4.0, PM10, temperature, and humidity |
| Use | Indoor |
| Display | Yes |
| Power | USB with backup batteries |
| Connectivity | Ecowitt RF |
| Gateway required | Yes |
| Home Assistant integration | Via Ecowitt gateway |
| Power supply | USB / pilas de respaldo |