Digital Sound Level MeterWith maximum and minimum hold function. Data hold function. Red backlight alarm and buzzer alarm. Auto or manual power off function, temperature measurement function. Professional Decibel MeterThe product adopts 4-digit display, which makes the reading data clearer and more convenient. High sensitivity sensor, fast and more accurate measurement. More portableThis mini handheld sound level meter is lightweight and easy to carry, with clear readings and convenient use at night, easy to use, it is not only extremely wear-resistant, but also stylish. Wide range and more accurateThe measuring range is 30-130db, which is suitable for measuring sound or noise in most occasions, for music recording, neighbor complaints, industrial environments, office settings, speech therapy and more. Applicable sceneThis sound level meter is a great tool for checking, monitoring or controlling the sound level of any environment. Suitable for sound quality monitoring in factories, offices, homes, schools and construction sites. Specifications: Brand: SMART SENSOR Model: ST9604 Measuring range 30-130dBA Accuracy 1.5db Resolution 0.1dB Temperature measurement range -10C~5014F-122F) Accuracy 2 Resolution 0.1 " Power supply AAA battery X 3 (not included) included) Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.