Amazon.com: LTEFTLFL Gm1356 Digital USB Noise Meter Sound Level Meter Decibel Meter 30-130Db A/C Fast/Slow Db + Software with Carry Box : Tools & Home Improvement
Large Screen Digital Sound Level Meter 30~130dB Wall Hanging Noise dB Meter Measuring with USB Transfer Data Storage Sw-525b - China Sound Level Monitor, Hanging Type Sound Level Meter | Made-in-China.com