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SwitchBot · SwitchBot CO2 Detector, Air Quality Monitor Indoor, CO2 Monitor for CO2/TEMP/Humidity, Portable Carbon Dioxide Detector for Home/Car/Office/Greenhouse
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Verdict
The Meter Pro CO₂ is a desk or wall monitor with a 92 mm screen that shows CO₂, temperature, humidity, time, date and a comfort indicator at once. It measures CO₂ every second with a Swiss-made NDIR sensor that SwitchBot specifies at ±50 ppm over 400 to 9000 ppm, alerts by sound, on-screen indicator and app notification, and runs up to 12 months on its battery. On its own it is a good stand-alone CO₂ clock. With a SwitchBot hub it becomes a trigger for the rest of a SwitchBot home, opening a window actuator or switching a fan when CO₂ climbs. That combination is what sets it apart from the Temtop and Qingping monitors it competes with. The limits are that remote alerts require the hub, and there is no particle or VOC sensing.
Who It Is For
- SwitchBot households that want CO₂ as an automation trigger.
- Bedrooms, offices and classrooms that want a clock-style display readable across the room.
- Anyone who wants a named NDIR sensor with a stated accuracy figure at a moderate price.
Our guide to choosing a CO₂ monitor for home use covers how it compares with app-first designs.
Documented Specifications
| Item | Documentation |
|---|---|
| CO₂ sensor | Swiss-made NDIR |
| Accuracy and range | ±50 ppm, 400 to 9000 ppm |
| Measurement interval | Every 1 second |
| Other readings | Temperature, humidity, comfort level, time, date |
| Display | 92 mm screen |
| Alerts | Sound, on-screen, app notification (SwitchBot hub required) |
| Size and weight | 92 × 79 × 25 mm, 154 g |
| Battery | Built in, up to 12 months, low-battery warning |
| Mounting | Wall-mount holes and adjustable bracket |
The Sensor and the Accuracy Figure
SwitchBot names NDIR and gives a ±50 ppm figure, which is unusually specific for a consumer listing. Most NDIR sensor makers quote a fixed ppm figure plus a percentage of reading, so at 2000 ppm the real tolerance will be wider than 50 ppm; treat the figure as the base accuracy at normal indoor levels. A one-second measurement interval means the display responds immediately when a room fills or a window opens; it also means the sensor is sampling continuously, which makes the 12-month battery claim worth watching in practice. Owners generally report months rather than weeks. Our guides on comparing CO₂ accuracy specifications and calibrating a CO₂ monitor explain how to read and check the figure.
Display and Alerts
The screen is the reason to choose this over a compact monitor. CO₂ is large, temperature and humidity sit beside it, and the comfort indicator gives a one-glance verdict. The time and date make it a bedside or kitchen clock, so it earns its place on a shelf. Alerts can be set for CO₂, temperature and humidity ranges, with a sound and an on-screen warning on the device and a push notification through the hub. Threshold advice is in setting useful CO₂ alerts.
The Hub and Smart-Home Integration
Without a hub the Meter Pro CO₂ talks to the SwitchBot app over Bluetooth when the phone is nearby. With a SwitchBot hub it uploads to the cloud, sends notifications anywhere, keeps history and can be exposed to smart-home platforms, including Matter through a compatible hub. The practical payoff is automation: CO₂ above a threshold triggers a SwitchBot curtain or window actuator, a smart plug on a fan, or a scene. For a household already running SwitchBot devices, that is a strong reason to pick this monitor. For anyone else, the hub is an extra purchase to factor in. Bluetooth versus hub-based designs are discussed in this guide.
Strengths
- Named NDIR sensor with a stated accuracy and range.
- Large, clock-style display with a comfort indicator.
- Long battery life with wall-mount options.
- Automation through the SwitchBot ecosystem.
Limitations
- Remote alerts, history and smart-home integration require a hub.
- No particle or VOC sensing.
- Continuous one-second sampling will test the 12-month battery figure.
How It Compares
The SwitchBot Meter Pro is the same device without CO₂. The Qingping CO₂ monitor has Wi-Fi built in with email alerts and no hub requirement. The Temtop C1+ is the lower-cost Bluetooth option. The Aranet4 HOME is the e-ink reference-class alternative at a higher price.
How We Research
This review is based on SwitchBot’s published specifications, the Amazon listing and owner reports. We did not run laboratory tests. Accuracy figures are the manufacturer’s.
Recommended Tools
Products shown because their documented specifications fit this guide. Price and availability are on Amazon and can change.
Frequently Asked Questions
Do I need a SwitchBot hub?
Not for the display, the on-device alerts or Bluetooth access from the app when nearby. A SwitchBot hub is required for app notifications away from home, cloud history and smart-home platform integration.
What accuracy does SwitchBot state?
The listing states ±50 ppm with a range of 400 to 9000 ppm, measured every second. That is a typical consumer NDIR class and suitable for ventilation decisions.
How long does the battery last?
The listing states up to 12 months from the built-in battery, with a low-battery warning.
Does it measure particles or VOCs?
No. CO₂, temperature and humidity only.
Affiliate disclosure: Akermin earns a commission from qualifying Amazon purchases made through links on this page. Our editorial picks are based on documented specifications and owner feedback, not commissions.