Advanced 5-in-1 Detection: This air quality monitor efficiently tracks real-time Carbon Monoxide (CO), temperature, humidity, atmospheric pressure, and altitude. Equipped with a high-precision sensor, it covers a wide range of measurements including CO levels from 0 to 999PPM and temperature from 14 to 122℉. Intuitive Alarm System: Stay safe with visual and audible alarms that alert you to CO levels. The device features a three-stage light indication system: green for safe (0-10PPM), yellow for caution (11-25PPM), and red for danger (26-999PPM), ensuring immediate awareness of any hazardous changes in air quality. Long-Lasting Battery with Smart Features: The portable monitor includes a 1000mAh lithium battery, offering extended use and a smart automatic sleep mode to conserve power. The screen dims after of inactivity but returns to full brightness with a button press, enhancing battery life. Versatile and Portable: Ideal for both indoor and outdoor environments, this monitor is a perfect travel companion for activities like camping and hiking. and equipped with a lanyard, it's easy to carry and can be placed anywhere from homes to cars, ensuring continuous air quality monitoring. Enhanced Display and Durability: Features a color LCD screen with backlight for clear readability in any lighting. The robust aluminum body is designed with a porous structure for improved heat dissipation and resistance to and impacts, making it a choice for any setting. Colour:black Material:plastic Package Contents: 1 * 5-in-1 Air Quality Monitor 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.