1. Equipped with an electrochemical sensor, it can accurately detect formaldehyde and TVOC, with strong anti-interference ability and more precise measurement. 2. No preheating is required upon startup, with a 3-second quick response. Detection can be carried out immediately after startup. 3. It features an AI intelligent automatic assessment function, which visually presents the air quality hazard level through expressions (such as fresh, average, mild pollution, etc.). 4. It automatically alarms when formaldehyde exceeds the standard, accompanied by sound prompts, and the screen value flash and the expression change. 5. It is equipped with a Type-C charging interface, has a built-in lithium battery, and supports intelligent overcharge protection, providing convenient and long-lasting power supply. It can comprehensively detect harmful gases. Besides formaldehyde, it can also detect methanol, toluene, xylene, alkanes and other TVOC organic harmful gases. Hardware upgrade, adopting three-dimensional stepwise filtration technology and double-layer electrodes, it is not affected by other gases and can accurately detect the concentration of specific gases. Simple operation, long the button for 3 seconds to detection, and it is easy to use for the elderly and children. Supports real-time dynamic monitoring, continuously tracking the concentration of formaldehyde, TVOC and other gases for 24 hours, ensuring safety even at night. Clear and intuitive display, the large screen simultaneously shows the values of formaldehyde and TVOC, and is accompanied by expressions and color bars, making the hazard level immediately apparent. Color:Black Material:ABS Package Contents: 1 * Formaldehyde 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.