DescriptionThis two-in-one smoke detector can prevent smoke and carbon monoxide. When a carbon monoxide is detected or the smoke exceeds the standard, an alarm of 80 decibels is sounded immediately, and the ring light flashes rapidly.Feature- Color: As shown. - Material: Plastic. - Size: 10x10x3.8cm.-Easy to install alarm that is suitable for all areas of the home. - This two-in-one smoke detector can prevent smoke and carbon monoxide. When a carbon monoxide is detected or the smoke exceeds the standard, an alarm of 80 decibels is sounded immediately, and the ring light flashes rapidly. - Battery powered and Independent installation: 3 x 1.5V battery power supply(Battery not included in the package). - Suitable for all the Place Possible to Produce Carbon Monoxide , Such as your Home Kitchen, Bedroom, Bathroom, Hotel. Also Useful When you are Enjoying the Barbecue, Using Charcoal Warm yourself, or Putting it in your Parking Garage, etc.