[NEVER USED] Air quality detector, CO2 PM2.5 TVOC HCHO tester, temperature and humidity with alarm

Product never used, packaging damaged during transport. Unopened product, repackaged in our warehouses, in perfect working condition, warranty available.

👉 Adopts an electrochemical detection module with stable detection performance, anti-interference capability, reliable power consumption, and allows for four long service life cycles. 👉 Large color LCD screen with backlight, you can clearly see the electrical quantity, CO2 value, TVOC value, HCHO value, temperature, and humidity. 👉 The product does not need to be activated; it is tested after pause, providing accurate detection and an audible alarm function. 👉 Equipped with an air quality level division function, four different colors correspond to different air quality levels, allowing you to know the current air conditions more precisely and graphically. 👉 Wall-mounted design, with two hanging holes on the back of the machine, making it applicable to more scenes and applications, with high practicality.