Advanced 4-in-1 Functionality: This versatile detector not only monitors carbon dioxide carbon monoxide levels but also measures temperature and humidity, providing a comprehensive overview of your environment. The clear display ensures easy monitoring and quick understanding of the current conditions. Accurate and Immediate Alerts: Featuring a high-performance chip and sensors, this detector ensures real-time air quality monitoring with a 3D porous duct design for enhanced air . It alerts you with both sound and light when CO levels exceed 50 ppm, ensuring your safety with a responsive alarm system. Extended Battery Life for Reliable Use: With a robust 2000mAh lithium polymer battery and included USB charging cable, this detector offers over 300 hours of standby time. It's designed for energy efficiency, automatically entering a low-power state after 1 minute of inactivity, yet remains vigilant in monitoring the air. Versatile Mounting Options: Equipped with a hook and a magnetic back, this detector is ideal for various settings. Easily attach it to vehicles, bags, or metal surfaces during outdoor activities. Its compact size makes it a perfect travel companion, enhancing safety wherever you go. Emergency Flashlight Included: The detector is not just a monitoring tool but also comes with a built-in bright flashlight at the bottom, providing essential lighting during nighttime outdoor activities or power outages, ensuring you're never left in the dark. Color:A:Black Material:ABS Package Contents: 1 * Detector 1 * Power cord 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.