High Accuracy: The measuring range of the dB meter is 30dB to 130dB. Note that it is normal for the screen to display 20-40 decibels in a quiet room. The decibel level for normal conversations is 40-60 decibels. Accuracy 3.5dB, resolution 0.1dB Lightweight Design The digital decibel meter is small, light, portable; with low power indicator; automatic shutdown after 15 minutes without operation; "OL" is displayed when the input exceeds the range Digital LCD Display Large backlit digital LCD display, the reading effect is clearer in dark places. High display quality, low eye damage, low power consumption, low radiation. Frequency range: 31.5Hz~4kHz Widely used: A sound level meter is an instrument for measuring ambient noise level. It can be used in homes, factories, workshops, schools, residential areas, offices, roads, hotels, hospitals, laboratories, theaters and sound systems. The scope of application is very wide and an indispensable tool in life Package includes: 1 x digital sound level meter, 1 x 9V battery, 1 x user manual. The brand team provides 24-hour online customer service for any questions to ensure the best shopping experience