WIFI Smoke and Carbon Monoxide Detector, Combination Detector, Powerful Siren, Self-Check and Test Button (No batteries included)

2-IN-1 DETECTOR: A single detector protects you from harmful smoke and excess CO in the air. The photoelectric smoke sensor and electrochemical CO sensor operate independently. The smoke detector detects both fast- and slow-burning fires with minimized false alarms, while the CO detector detects carbon monoxide leaks from various sources, providing you with dual protection. COMBINATION DETECTOR WITH AUTOMATIC VERIFICATION: This 2-in-1 smoke and carbon monoxide detector features a built-in chipset. The carbon monoxide detector automatically detects the concentration of carbon monoxide from any combustion source in the ambient air. Its detection range covers up to 40 m² in a room. The LED is green under normal conditions and turns red in an emergency. TEST/SILENCE BUTTON AND POWERFUL SIREN: The combination detector is equipped with a test button. Please press the test button monthly to confirm the detector is working properly. The alarm emits a louder sound than 85 dB at a distance of 3 meters, which can be heard throughout your home. The fire and CO alarm may wake you and your family, even if you are sound asleep. You can press the test button to temporarily disable it. EASY INSTALLATION: The battery-operated smoke and CO detector can be installed by you in 5 minutes. The smoke alarm can be mounted on the ceiling or wall, in a central location outside each sleeping area, on each level of the house, and in any other locations required by regulations.