TIGREZY - High quality products and satisfactory customer service at a reasonable price 【2 In 1 Protectio】 Home alarm has two built-in sensors that display the concentrations of smoke and carbon monoxide (CO) on a large LCD screen. This prevents it from being affected by the concentration of carbon monoxide and smoke in the ambient air. Reminder: During the test, place the alarm in a sealed bag and test it with a quantity appropriate carbon monoxide and smoke. 【Super Alert】 When the carbon monoxide content exceeds 300ppm, an alarm will sound, the red light will flash, and the buzzer will sound every 5 seconds. The valve should be closed immediately and the doors and windows should be opened to allow indoor air to circulate. If a smoke concentration greater than 0.1% db/m is detected, an alarm will sound, the blue light will flash, and the buzzer will always sound a volume alarm greater than 85 dB. 【Sensitive and Fast】 Carbon Monoxide Smoke Detector Equipped with an electrochemical CO