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Purifier or Monitor First
Should you buy an air purifier or air quality monitor first? This guide compares immediate relief against diagnostic insight to help you decide.
Humai HI-300 Smart Indoor Air Quality Monitor: Real-time air quality measurement
Wondering if your home or office air is truly healthy? The Huma-i Smart Indoor Air Quality Monitor gives you the facts, not guesses. This device tracks CO2, VOCs, and particulate matter (PM2.5, PM10, PM1.0) alongside temperature and humidity. It’s ideal for anyone concerned about indoor air quality—especially those with allergies, asthma, or a home office.
Unlike basic monitors that only show numbers on a screen, this one connects to a free mobile app and works with Alexa. Get real-time data on your phone from anywhere. Set up IFTTT rules to trigger an air purifier when PM2.5 spikes. The alarm and push messages alert you when levels turn poor, so you can take action before symptoms start. With 90-day tracking, you can spot patterns—like how your morning cooking affects VOC levels.
The 2.4GHz Wi-Fi setup is straightforward. Just plug it in, connect via the app, and start breathing easier knowing you have clear, continuous data. It’s a practical tool for making informed decisions about your indoor environment.
Features
- Measures CO2, VOC, PM2.5/PM10/PM1.0
- Measures temperature and humidity
- Works with Alexa
- Free mobile app with 90-day data
- Push message and alarm notifications
- Connects via Wi-Fi 2.4GHz
- Real-time air quality measurement
General specs
- Brand: Humai
- Model: HI-300
- Seller: Amazon
- ID: B08SR5Q7C6
- Mobile App: Yes
- Sensor Type: Indoor Air Quality Monitor
- Connectivity: Wi-Fi 2.4GHz 802.11 b/g/n
- Alarm Function: Yes
- Co2 Measurement: Yes
- Measurement Voc: Yes
- Ios Requirement: 9.0 or later
- Measurement Pm10: Yes
- Measurement Pm1.0: Yes
- Measurement Pm2.5: Yes
- Notifications Push: Yes
- Humidity Measurement: Yes
- Android Os Requirement: Jelly Bean 4.1 or later
- Temperature Measurement: Yes
- Smart Assistant Compatibility: Alexa, IFTTT
- First listed by seller: May 20, 2026
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer
€154.11
Free shipping
New
Third-party seller
Shippable
Offers updated: 9/1/26
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
Shipping options
Delivery to 
United States
United States
Available
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| Brand | Humai | Zunate | SUPNOVA | Sonovara | AUNMAS | Acenew |
| Model | HI-300 | 12 in 1 Air Quality Meter | ||||
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| Rating |
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| Price | €154.11 | €30.28 | €39.60 | €60.26 | €30.68 | €34.43 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 20, 2026 | Jun 24, 2026 | May 29, 2026 | May 27, 2026 | Jun 24, 2026 | May 29, 2026 |
| Sensor Type | Indoor Air Quality Monitor | Dual-chip system | NDIR (CO2) | |||
| Connectivity | Wi-Fi 2.4GHz 802.11 b/g/n | WiFi | WiFi, App control | WiFi, Smartphone APP | WiFi (2.4 GHz) | |
| Display | Large screen | High-definition color screen | LED with Raise to Wake | |||
Humai HI-300 Black Real-time air quality measurement
€154.11
Affiliate link. As an Amazon Associate I earn from qualifying purchases.
When this device makes sense
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