Product Description: Material: Plastic Color: White Size: 11x11x4.5cm Working Voltage: 4.5V Working Temperature: -20-60℃ No Static Current: 5uA Installation: Ceiling Alarm Mode: Sound and Light Alarm Package Contents: 1 x Carbon Dioxide Detector High-Quality Carbon Dioxide Detectors: Carbon dioxide detectors - highly accurate and reliable signals for long-term use. An 85dB audible alarm and a flashing red LED when dangerous levels of CO are detected to effectively alert family members. 360-Degree CO Detection: The circular CO alarm provides 360-degree detection of carbon dioxide. The alarm duration depends on the concentration of carbon dioxide. Extra Loud Alarm?: Even when sleeping, the elderly can hear it. Recommended for installation on every floor of a multi-story building to ensure the alarm can be heard from anywhere. Energy Saving?: When the unit is in normal standby mode, the display brightness is turned off to reduce energy consumption. A low battery warning alerts the user to replace batteries. Versatile?: This carbon dioxide detector is suitable for any location where carbon dioxide may be present, and the battery-powered unit is easy to install and maintain. Any electrician can easily mount it on any wall or ceiling with the included screws. Product Description: Material: Catnip Color: Gray Size: