For sale: A device that measures sound levels in decibels (dB), relative humidity, temperature, air velocity, and light intensity (Lux/Fc). It features a large dual LCD screen displaying readings, along with Data Hold and MAX/MIN value recording functions. It contains a precise light sensor, a capacitive humidity sensor, and a low-friction air velocity measurement fan. Sale to the highest bidder, knowing its value is around 1600, and the sale is to the highest bidder. The device is clean and used.