Measurement Tester Decibel - It will automatic shutdown after no operation within 30min to ensure the battery service life and also features data hold, maximum and mumimum data display.. Measurement Noise Tester With portable design, anti-drop, anti-skid, and anti-static design, suitable for single hand operating with a comfortable feeling.. Sound Level Meter - Featuring large LCD display screen, cool and modernized design, simple to operate and easy to read even in the dark.. 30-130dB Digital Noise It is lightweight, compact, ergonomic, user-friendly and ideal for monitoring noise levels.. Tester Decibel Measurement - It is widely used to measure the sound level of rooms, subways, libraries, business centers, offices, homes, etc..
