Smart home platform : Alexa,Tuya,Google AssistantModel Number : CO999Type : Carbon Monoxide DetectorsCertification : CE,FCC,RoHS,ULACJ High Sensitive CO Sensor for home Wireless Carbon Monoxide Poisoning Smoke Detector Warning Alarm Detector LCD IndicatorProduct FeatureThe detector adopts special structural design and ASIC, which has the characteristics of dustproof, insect-proof and anti-interference from outside light.1. It is a carbon monoxide detector alarm, suitable for all fields: houses, shops, hotels, restaurants, office buildings, schools, banks, libraries, computer rooms and warehouses, etc.2. Durable material: This product is made of high-quality material, durable, long service time, firm and stable in use.3. The alarm and warning personnel should stay away from the danger zone when smoke is detected.SpecificationSensitivity/Alarm Time:Within 60~90 minutes at 50ppm CO concentration;Within 10~40 minutes at 100ppm CO concentration;Within 3 minutes at 300ppm CO concentrationLCD Displayer (optional): 4 digits LCD displayerAudibility: 85dB ( at 1m distance ), Frequency 3 - 0.5KHZStandby Current: <50μAAlarm Current: <50mAStandby Mode: Green Led flashes once every 30 secondsAlarm Mode : Red Led quickly flashes 4 times with unit chirping every 5 seconds, then repeat,Low-bat Indicator:Chirp every 30s as battery lower than 3.3V with green LED flashing and Lb on LCD