With this carbon monoxide detector, you can always detect the concentration of carbon monoxide to ensure the safety of you and your family.Features:The carbon monoxide with a digital display that can sensitively detector the concentration of carbon monoxide. The alarm sound reaches 85 decibels, a super-strong alarm device.The Co alarm detector adopts a high-precision sensor that can alert you to the dangers of carbon monoxide. Protect your life safety.Powered by 9V dry battery(include), easy to install. Battery lifetime up to 1 year. The equipment has a fault self-checking function. When a fault occurs, the fault light will always be on to remind the normal operation of the equipment.Smart sensor sensitivity setting, 50PPM 10-40 minutes alarm, 100PM alarm immediately, no need to worry about the alarm falsely.If there are any problems, please contact our store in time. We will give you a satisfactory solution. Thank you for your understanding.Specifications:Item: Carbon Monoxide alarmMain material: PlasticSensitivity: 100PPM alarm immediately; 50PPM alarm within 10-40 minutesAlarm sound: 85dBBattery: 9V dry battery(include)Size: 12.3*12.3*3.9cmNotice:* There could be some deviations due to manual measurement or slight color difference owing to photographing condition. Thank you for your understanding.Package Information:Package size: 14*14*4.5cmPackage weight: 190gGift Box PackagePacking List:1* Carbon Monoxide alarm1* Battery