ECVV Sound Level Meter Portable Digital Noise Meter Tester with LCD Backlight Display Decibel Meter with Data Record Function Measuring Range 30~130dBA Toilet Bidets used to measure the humidity

used to measure the humidity level of wood (including cardboard

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Thermometer * 1

rest assured to use

-1ps one set of mounting tools

ECVV Sound Level Meter Portable Digital Noise Meter Tester with LCD Backlight Display Decibel Meter with Data Record Function Measuring Range 30~130dBA Toilet Bidets used to measure the humidityCash on Delivery Free Shipping 1 3 days One Year Warranty [SHORTDESCRIPTION] INTRODUCTION: Sound level meter, also called noise meter, is an instrument used to measure sound pressure level or sound level. It is the most basic and most commonly used instrument in acoustic measurement. Nowadays, people are increasingly pursuing the improvement of the quality of life. There is a kind of pollution called sound pollution. When the sound level reaches a