Review on 🌡️ Portable Professional Temperature Detector - LFF by David Dober

Its dimensions are approximately 3 x 3 x 1 inches. Power is supplied via a USB-A to USB micro cable (transistor block not included). It has to be related to work. On the front, it shows the number of particles in 2.5 large numbers in the middle, temperature and humidity in the top corners, and the time at the bottom. Air quality is indicated by colored arcs around the central display. There are 3 buttons on the back: Up, Down and Gear. I find this device fairly easy to read. It does a decent clock/air quality monitor. Unfortunately I lost the instructions before the device worked and the controls are not very intuitive. I found that by holding the gear knob on the back you can use the up and down buttons to adjust the time. And what if you turn off the device, then there is no built-in battery, so you have to reset the time. I'm not sure if there are other features you can install. If so, they aren't intuitive, so don't waste these instructions. The device is fairly easy to read from 5-10 feet away. The air quality readings are comparable to my other air quality monitors. Overall, this device is easy to read, but the controls aren't intuitive.