Features 1、【Versatile Air Quality Monitor】: The 3-in-1 multifunctional air quality monitor is designed to detect and monitor CO concentration, temperature, and relative humidity in real-time. With its exceptional features, you can easily stay informed about the air quality around you. 2、【Reliable Alarm Function】: The monitor supports an alarm function that alerts you with a sound alarm when the CO concentration exceeds a safety level. This ensures that you are promptly notified of any potential dangers and can take appropriate action. 3、【Clear and Easy-to-Read Display】: Equipped with a large screen and backlit display, it provides clear and easy-to-read measurements. You can effortlessly check the CO concentration, temperature, and relative humidity at a glance, ensuring accurate and reliable readings. 4、【High Accuracy Electrochemical Sensor】: Built-in a high accuracy electrochemical CO sensor, the monitor offers superior accuracy and precises measurements. You can trust the reliability of the data provided, allowing you to make informed decisions regarding your indoor air quality. 5、【Long Endurance and Portable Design】: Powered by 2*AAA battery(not included), it boasts low power consumption and can last for over 100 hours of continuous use. Its compact size and lanyard feature make it convenient to carry around, allowing you to monitor air quality wherever you go. 6、【Premium Construction and Nice Ventilation】: Made of high-quality ABS material, the monitor has highly durability and resistant to impact. It is also equipped with multiple ventilation ports, ensuring efficient heat dissipation and long-lasting performance. 7、【Easy Installation and Versatile Use】: With the included adhesive fasteners, you can easily mount the monitor on the wall or any other surface. Its versatile design makes it suitable for various settings such as homes, offices, schools, and more, offering you peace of mind with its reliable air quality monitoring capabilities. Specification Features: 【Versatile Air Quality Monitor】: The 3-in-1 multifunctional air quality monitor is designed to detect and monitor CO concentration, temperature, and relative humidity in real-time. With its exceptional features, you can easily stay informed about the air quality around you. 【Reliable Alarm Function】: The monitor supports an alarm function that alerts you with a sound alarm when the CO concentration exceeds a safety level. This ensures that you are promptly notified of any potential dangers and can take appropriate action. 【Clear and Easy-to-Read Display】: Equipped with a large screen and backlit display, it provides clear and easy-to-read measurements. You can effortlessly check the CO concentration, temperature, and relative humidity at a glance, ensuring accurate and reliable readings. 【High Accuracy Electrochemical Sensor】: Built-in a high accuracy electrochemical CO sensor, the monitor offers superior accuracy and precises measurements. You can trust the reliability of the data provided, allowing you to make informed decisions regarding your indoor air quality. 【Long Endurance and Portable Design】: Powered by 2*AAA battery(not included), it boasts low power consumption and can last for over 100 hours of continuous use. Its compact size and lanyard feature make it convenient to carry around, allowing you to monitor air quality wherever you go. 【Premium Construction and Nice Ventilation】: Made of high-quality ABS material, the monitor has highly durability and resistant to impact. It is also equipped with multiple ventilation ports, ensuring efficient heat dissipation and long-lasting performance. 【Easy Installation and Versatile Use】: With the included adhesive fasteners, you can easily mount the monitor on the wall or any other surface. Its versatile design makes it suitable for various settings such as homes, offices, schools, and more, offering you peace of mind with its reliable air quality monitoring capabilities. Specifications: Color: White Material: ABS Power: 2 * AAA Battery(Not Included) Item Size: 59 * 59 * 19mm/ 2.3 * 2.3 * 0.7in Item Weight: 65g/ 2.3oz Package Size: 93 * 76 * 32mm/ 3.7 * 3.0 * 1.3in Package Weight: 90g/ 3.2oz Packing List: 1 * Air Quality Monitor Package List 1 * Air Quality Monitor