2 IN 1 Combination Carbon Monoxide and Photoelectric Smoke Detector

Product Description: Carbon monoxide Alarm - When the unit detects the carbon monoxide gas concentrations more than 100 PPM,it will alarm,and the buzzer will make sound "di" four times at every 5 seconds,the red light flashes,and continue alarming. Fire Detector - When the unit detects the smoke concentration over than 0.1%db/m,it will alarm,the blue light flashes rapidly and the buzzer continue alarming. Specification: Power supply: 3*1.5v AA battery Alarm voice: Light/sound prompt Sensor: electrochemical carbon monoxide sensor and Infrared photoelectric sensor Carbon monoxide sensor detect concentration: 000-999 PPM Smoke sensor sensitive: 0.1%db/m-9.9%db/m Alarm indication: LCD display, Light/sound prompt Battery capacity: low battery alarm Dimensions: 104*39mm Sources of CO in our homes include fuel-burning appliances and devices such as: Clothes dryers,Water heaters,Furnaces or boilers,Fireplaces, both gas and wood burning,Gas stoves and ovens,Motor vehicles,Grills, generators,