Dual Protection Technology: Equipped with a high-sensitivity photoelectric sensor for smoke detection and a precise electrochemical sensor for carbon monoxide, this 2-in-1 detector ensures rapid and accurate response to protect your home or office. Enhanced Visibility with LCD Display: The large, easy-to-read LCD display on this combined smoke and CO detector provides real-time updates on carbon monoxide levels and smoke concentration, enabling you to monitor the safety of your environment effectively. Loud and Clear Alerts: Featuring a powerful 85 dB alarm alongside three-color LED indicators, this device alerts you visually and audibly when smoke or carbon monoxide levels become hazardous, ensuring you can react quickly to potential dangers. Effortless Setup and Maintenance: This smoke and carbon monoxide detector is designed for easy installation and operates on 3 AA batteries(Not included), making it a convenient choice for homes, offices, and hotels without the need for complicated wiring. Continuous Monitoring and Safety Assurance: With a test button for regular functionality checks and a low-battery warning, this detector keeps you informed about its operational status, offering peace of mind through continuous protection. Color:White Material:plastic Package Contents: 1 * Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.