SwitchBot
SwitchBot Meter Pro CO2
- Bluetooth
Verified July 2026
The affordable route to CO2 monitoring: a proper NDIR sensor plus temperature and humidity on a big desk display for around £60 — half the price of an Aranet4. Home Assistant's certified SwitchBot Bluetooth integration reads it locally with no SwitchBot hub required.
In Home Assistant
| Control | Type | What it does |
|---|---|---|
| CO2 | Sensor (ppm) | NDIR carbon dioxide reading |
| Temperature / Humidity | Sensor | Room conditions |
| Sync time | Button | Correct the onboard display's clock |
A confirmed HA bug had this specific model misidentified as a completely different SwitchBot product (a light strip), creating a light entity instead of sensors until fixed — worth an integration reload if readings don't appear after pairing. Because it's read over BLE, having the SwitchBot app open on a phone at the same time as HA's connection can cause timeouts from competing connections. There's also a sync-clock button entity worth automating on a daily schedule to keep the onboard display's time accurate through DST changes, something manual in the SwitchBot app otherwise.
Specs
- power
- 2x AA or USB-C
- display
- Large LCD with comfort indicator
- requires
- HA Bluetooth adapter or ESPHome Bluetooth proxy
- sensor type
- CO2 (NDIR), temperature, humidity