Review on 🔊 Accurate and Versatile: Yosooo Digital Mounted Measurement 30-130DB for Precise Sound Analysis by Ryan Olsen

I bought two of these, SNDWAY SW-525B, to mount back to back and hang from the ceiling in the middle of our 25 x 25 foot studio jam band I ran test tones, pink noise and the two devices match and also match the sound measurement software on my iPhone all within 1dB USB 5V power required it has no battery It comes with a short micro USB cable and no power adapter I plan on making my own USB power cable to make it long enough for my application User manual covers models SW-525A and SW-525B, is well written and seems to cover everything Loudness measurement is "A" rated and "Fast" response model SW-525B features has a data logging function, including volume, date and time, and can export them to a PC, while the SW-525A model is not the same.