Portable sound level meter: a handy gadget, very suitable for noise monitoring, home theater settings, health and safety compliance, vehicle noise testing, etc. High-definition digital LCD display: display Large, clear backlit LCD, can quickly display the measured value, clear and easy to read. Power supply: 3 AAA batteries (NOT included), low battery indicator, 10 minutes automatic shutdown without operation, convenient to save power. Versatile: the measuring range is 30 to 130 dBA. Maximum value / minimum value / data hold function-Auto power off-Battery power indicator: directly check the remaining power. Wide range of uses: designed to meet the control and measurement requirements of sound quality in various environments. It is very suitable for testing music recording, noise complaints from neighbors, industrial environment, office environment, voice therapy, etc. Delivery quantity: 1 * decibel meter