Home Alarm with Carbon Monoxide and Smoke Detection, High-Precision LCD Digital Display, 2-in-1 Smoke and Carbon Monoxide Detector (Battery Not Included)

【2-IN-1 PROTECTION】 This home alarm has two built-in sensors that display smoke and carbon monoxide (CO) levels on a large LCD screen. This protects against the effects of carbon monoxide and smoke concentrations in the ambient air. Reminder: During testing, place the alarm in an airtight bag and test it with the correct amount of carbon monoxide and smoke. 【Super Alarm】 When the carbon monoxide level exceeds 100 ppm, an alarm will sound, the red indicator light will flash, and the buzzer will sound every 5 seconds. Immediately close the valve, open doors and windows, and allow indoor air to circulate. If a smoke concentration exceeding 0.1% dB/m³ is detected, an alarm will sound, the blue indicator light will flash, and the buzzer will always emit an alarm volume above 85 dB. 【Sensitive and Fast】The carbon monoxide smoke detector is equipped with an electrochemical CO sensor and an advanced smoke sensor, which can accurately detect the risk level of carbon monoxide and smoke. If the detected concentration is out of range, the product responds quickly and immediately gives you an 85-decibel audible alarm until the ambient gas volume falls below the alarm set point. 【Ultra-Low Power Consumption】The gas detector's screen will be in standby mode during normal operation. Only the indicator light will be on; the green light will flash every 30 seconds. The carbon monoxide detector consumes very little power in standby mode, and the battery has a six-month lifespan. There is also a low battery alarm function: when the battery is low, the red indicator light flashes once every 10 seconds and the LCD screen displays "Lb".