[Extended Battery Life] Equipped with a 1200mah battery, this detector allows for continuous operation up to 7 hours, complemented by a type c charging port for convenient usb charging, enhancing user convenience. [Precise Detection] The air quality meter utilizes advanced semiconductor, infrared, and electrochemical detection technologies to accurately measure co2, hcho, tvoc, temperature, and humidity for improved air quality monitoring. [Versatile Unit] Featuring seamless unit switching, the default celsius temperature can be effortlessly converted to fahrenheit with a quick press of the power key, providing flexibility for diverse user preferences. [Durable Design] Crafted from sturdy abs material, the air quality tester is resilient, lightweight, and compact, making it easy to carry and use, with enhanced airflow circulation for precise real-time detection results. [Easy Operation] With a simple 3-second press of the power key, users can easily turn on or off the detector, triggering automatic detection upon activation, ensuring hassle-free usage.