Since some of the products I review come with a fan, I checked some sound level meters a couple of years ago, but since they were a little too expensive for my limited use, I skipped for the time being. However, while browsing some promotions or new arrivals on DealExtreme, I’ve come across UNI-T UT355 “Noise Detector Decibel Noise Tester” which sells for $15.56 including shipping.
- Noise Levels & Accuracy – 30 to 130 dB with 0.1 dB resolution, +/- 1.5 dB accuracy
- Sample rate – Fast: 125ms; Slow: 1 second
- Measurement features – MAX/MIN, Data hold, overload indication (OL)
- Display – 1.64″ LCD display with backlight
- Buttons – Power, FAST/SLOW selection, MAX/MIN/normal selection, HOLD/BL for data hold (short press) or turning on/off the backlight (long press)
- Power Supply – 3x AAA batteries; 5 minutes auto power off
- Power Consumption – Active: < 40 mA; Off: < 10 uA
- Dimensions – 15 cm x 5.2 cm x 2.7 cm
- Weight – 116 grams
You can ignore the specifications on DealExtreme, since they apparently used the ones from a UNI-T humidity and temperature sensor, but I managed to get the technical details from UNI Trend UT353 product page, and some other sellers on Amazon US ($28), eBay ($18 and up), Aliexpress ($13.5 and up), and Banggood ($17).
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
5 Replies to “UNI-T UT353 is a $15 Lightweight Sound Level Meter”
https://www.aliexpress.com/item/Portable-Digital-Sound-Level-Meter-New-Upgrade-Noise-Tester-LCD-Noise-Measuring-Instrument-Decibel-Monitoring-Diagnostic/32723924008.html is a different model, for USD $11. Brand is KMoon
I wish there would be a some kind of communication interface.
Good find. Similar model on eBay for $10.90 with free shipping -> http://www.ebay.com/itm/Test-Technologies-LCD-Digital-Sound-Noise-Level-Describe-Meter-30-130dBA-ZJ-/152134000333
It won’t ship to my location though.
Why not use the Smartphone? There is apps for that. Or is it lacking in accuracy?
I had not thought about it. The measurements are a bit different on the phone and sound meter though.
Phones are also limited to about 100 dB or less depending on model, but for checking fan noise level it should not be an issue…