2 Pack Smoke and Carbon Monoxide Detector,Smoke Detector Carbon Monoxide Detector Combo with Batteries,Fire Alarm Smoke Detector with Test Button and Digital Display

Two Sensors: Carbon monoxide detector smoke alarm has a 2-in-1 dual sensors, photoelectrical and electrochemical sensors. They work one after the other, no matter which one reaches their dangerous concentraion, combination smoke carbon monoxide alarm detector will go off with red led flashing
Readable Digital Display:The screen of smoke detector carbon monoxide detector combo will display the CO or smoke concentration and illuminate when it goes off. This smoke detector has a standby mode, its screen might not be on and no wish to worry about being disturbed under a standby mode. Under a standby mode, green led blinks about every 60s
Loud Beep: This combination smoke carbon monoxide alarm detector has a louder than 85 decibels beep with red LED flashing. It is loud enough to will let you know the danger and take ation to steer clear of it quickly. It is suggested to install a couple of in your home for a maximum protection
Red or Green Led function: This smoke alarm and carbon monoxide detector has a low battery warning, it’s going to go off and blink red led. When dangerous concentration happens,it also goes off and blinks red led. Green led with beep is for test button to detect this fire detector and carbon monoxide detector’s different working status
Green Led Too Bright? : If you are feeling that the green led is too bright, It is suggested to cover with a transparent pvc until you are feeling good. This smoke detector is wireless, easy installation. Both wall and ceiling are suitable for installation