Features: Ensures your family safe with the Carbon Monoxides Detectors, a small size device for accurate monitoring of CO in your home environment. This carbon Monoxides alarm features a high precisions sensors that provide CO concentration readings and loud alerts to signal the presences of hazardous gas. The carbon Monoxides detectors is essential safe tool for every household, especially those with elderly, children, or homes using gas and heating appliances. Suitable for use in residential space, offices, hotel, and schools, this carbon Monoxides Detectors help you find the CO leakage. With its ABS constructions, the carbon Monoxides detectors with functionality, making it a practical addition to any indoor setting. Specifications: Material:ABS Power:3Pcs 1.5V Battery (not included) Size:Approx.64mm/2.51''x60mm/2.36''x28mm/1.1'' Package Includes: 1Piece Carbon Monoxides Detectors note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.