Wireless CO Detector ATLO-CD21MW-TUYA

Carbon monoxide detector with Wi-Fi connectivity and real-time LCD display, providing reliable protection against the silent killer. The ATLO-CD21MW-TUYA uses an electrochemical sensor to accurately measure CO levels and alerts you with an 85 dB siren, LED indicator, and instant push notifications to your smartphone via the Tuya Smart Life app.

Advantages

This detector offers continuous monitoring with a long battery life of up to 2 years from 3 AA batteries. The built-in LCD shows current CO concentration, and the self-test function ensures the device is always ready. Installation is simple with included mounting hardware for wall or ceiling placement.

Suitable for

• Homes with gas appliances, fireplaces, or attached garages
• Rental properties and Airbnb accommodations
• Offices and small businesses
• Anyone wanting smart home integration for safety

Key specifications

• Detects carbon monoxide (CO) with electrochemical sensor
• Wi-Fi 2.4 GHz connectivity for remote alerts
• Alarm sound level: ≥85 dB at 1 meter
• Alarm thresholds: 50 ppm (60–90 min), 100 ppm (10–40 min), 300 ppm (<3 min)
• Power: 3x AA 1.5 V batteries (included)
• Battery life: up to 1–2 years
• Operating temperature: 0°C to 50°C
• Operating humidity: 10% to 95% RH (non-condensing)
• LCD display for real-time CO level
• Low battery warning and self-test function
• Mounting: wall or ceiling
• Certifications: CE, RoHS

Recommendations

For optimal safety, install one detector on each floor and near sleeping areas. Test the unit monthly and replace batteries annually. Pair with the Tuya app to receive remote alerts even when away from home.