Qingping Air Monitor Lite

At a glance

• In its favour
• Plain fact
• Worth knowing
• Not stated by the maker

• In its favour: The Android app records nights while your phone listensNew: tested with simulated broadcasts so farOn iPhone, type the night’s high each morning.
• Plain fact: Needs a plug (battery lasts about 7 hours)
• Worth knowing: Self-calibration reportedly on; no off switch documented
• Not stated by the maker: Altitude correction not stated

With HouseExhale

The app looks at your bedroom’s CO₂ across the night and checks it against the 800 ppm goal. Here’s how this monitor’s nights get in.

Setting it up

1. Install the app for your model: Qingping IoT for the CO₂ & Temp & RH Monitor (CGP22C), or Qingping+ for the Air Monitor Lite (CGDN1).
2. Add your monitor and let it show CO₂.
3. Keep it plugged into USB power overnight so it updates often.
4. Check the screen shows a CO₂ number.
5. The CO₂ & Temp & RH Monitor records once an hour by default. For a useful night in its own history, set a shorter recording interval in the Qingping IoT app.

Qingping’s CO₂ & Temp & RH Monitor (CGP22C) and Air Monitor Lite (CGDN1) both work. Their thermometers don’t measure CO₂.

Finding last night’s high

Open your monitor in the Qingping app (Qingping IoT or Qingping+) and look at last night’s CO₂ history. Note the highest point while people were asleep.

Importing its export

1. Look for Export or Share in the Qingping app’s history screen (Qingping IoT or Qingping+).
2. Save it as a CSV and choose it here.

Qingping says the CGP22C’s history exports to a spreadsheet. We haven’t confirmed a CSV export on a real Qingping yet, so the app checks your file before saving.

Where to put it: about head height, at least 2 ft from anyone’s face, away from windows, doors and vents, and in the same spot every night. More on placement

Calibrating it

• Worth knowing: Self-calibration reportedly on; no off switch documentedOn; the maker doesn’t say whether it can be turned off (on by default, per a distributor)

Qingping doesn’t publish a calibration procedure. In the app’s settings, look for automatic calibration (a distributor of a Qingping-made monitor says it’s on by default and can be turned off) and a CO₂ reset. Calibrate only outdoors, in stable fresh air, and only if the outdoor check shows it’s off.

A reviewer found a manual CO₂ calibration tool in the Qingping+ app; no maker instructions found

Outdoor air is about 425 ppm. Outside in the shade, a good monitor settles between about 400 and 450 within 15 to 30 minutes. Many monitors treat fresh air as 400, so 400 to 420 is normal. Can I trust my monitor?

Specs

Model

CGDN1

Sensor and accuracy

True CO₂ (NDIR, Senseair S8), plus particles; Qingping gives no accuracy figure

Self-calibration

On; the maker doesn’t say whether it can be turned off (on by default, per a distributor)

Corrects for altitude

Not stated by the maker

Also measures

PM2.5, PM10, temperature and humidity

CO₂ range

Sources disagree: 400–9,999 ppm in the manual; 400–5,000 ppm on Smart Air’s (a distributor’s) page

How often it updates

Readings refresh every second, per a comparison site; no maker figure found

Power

Battery lasts about 7 hours, so keep it plugged in

Screen

Color screen

History

30 days in the Qingping+ app, exportable in 15-minute steps (per a reviewer)

App

Qingping+ app (Apple App Store and Google Play), Apple’s Home app, or Mi Home / Xiaomi Home

Exports a CSV

Documented; not yet confirmed on a real file

Connects by

Wi-Fi (2.4 GHz) and Bluetooth 5.0. In Apple Home, viewing it away from home and automations need a HomePod or Apple TV as a home hub. Smart Air says it doesn’t need internet to monitor.

Alarm

No buzzer or warning light mentioned. Smart Air (a distributor) says the Qingping+ app sends alerts when air quality becomes unsafe.

Smart home

Apple Home (HomeKit) and Mi Home / Xiaomi Home, per the manual. Home Assistant: the official Qingping integration reads CO₂ locally from its Bluetooth broadcasts. Matter: not supported, per a comparison site. A reviewer saw CO₂ as a number in Apple Home, with only a “High” CO₂ level available as an automation trigger.

Size

63.6 × 46 × 54.6 mm

Weight

143 g

Works in

Not stated by the maker

In the box

The monitor and a USB-C charging cable; no charger

Warranty

1 year from Smart Air, a distributor; no Qingping warranty found

Specs from the maker’s own pages, checked October 12 and October 17, 2026. “Not stated by the maker” means no maker page we could open says.

Turning ventilation up

Home Assistant’s Qingping integration listens to its Bluetooth broadcasts for CO₂, with no cloud. Home Assistant: Qingping integration

With a smart-home relay on a ventilator’s high-speed input, that reading can turn an HRV or ERV up at 750 ppm and back down at 650. Ventilator makers don’t document this, so check your unit’s manual first, and keep to low-voltage inputs.

CO₂ controls · Make the system you have turn up by itself

Before you buy

• Worth knowing: Check the price before buyingWe couldn’t confirm a current store price, or it was out of stock, when we checked.
• Plain fact: About $76–$90 before tax and shipping
• Plain fact: New in the Android appTested with simulated broadcasts, not yet with a real monitor overnight.

About $76–$90, checked October 2026; check before buying. Prices change often; we checked at the maker’s store and large US retailers. Any monitor that measures true CO₂ works with HouseExhale, and one is enough: move it between rooms.

Compare it

The monitors closest to it in price.

• 

  INKBIRD IAM-T2 (Bluetooth version)

  About $70–$80

  A rechargeable monitor that runs about 60 days on a charge. Get the Bluetooth version.

• 

  Qingping CO₂ & Temp & RH Monitor

  About $70

  Rechargeable, with 24-hour and 30-day graphs in the Qingping IoT app. Plug it in overnight so it updates often.

Compare the three side by side