Choose Your Reading
Choose by the reading you need: temperature and relative humidity, PM2.5, CO2, or a documented combination. Check the exact model before buying.
If you are interested in more details, you can find full information on the seller's page.
Desktop indoor air quality CO2 monitor with a 3-year parts warranty and a 1-year labor warranty.
| This item | Recommendations | |||||
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Desktop Indoor Air Quality CO2 Monitor Red Parts warranty term: 3 years
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TENMARS ST-501 Red Measures CO₂, temperature, and relative humidity
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Smart Air Quality Monitor with CO2, WiFi, Temperature & Humidity Sensors White
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Air Quality Monitor White High precision NDIR CO2 detection
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Air Quality Monitor 10-in-1 comprehensive air quality analytics
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Air Quality Monitor Indoor, 13-in-1 with WiFi
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| Brand | CEM | TENMARS | Acenew | Aurikall | OUGETHER | |
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| Price | €189.90 | €470.02 | €36.04 | €43.70 | €26.85 | €34.24 |
| Seller | Newegg | Newegg | Retailer | Retailer | Banggood | Retailer |
| Update | Nov 12, 2026 | Nov 12, 2026 | May 29, 2026 | May 29, 2026 | May 9, 2026 | May 29, 2026 |
| CO2 Accuracy | ±50 ppm | ±(50 PPM + 5% of reading) | ±50ppm ±5% of reading | |||
| Connectivity | WiFi (2.4 GHz) | WiFi | WiFi, TuyaAPP | |||
| Humidity Accuracy | ±3% RH | ±3% RH (20-80% RH) | ±5% RH | |||
| Temperature Accuracy | ±1.8 °F | ±1.8°F | ±1.8°F | |||
| Battery Capacity | 2000 mAh | 2500mAh | 2000mAh | |||
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