Features High Accuracy: With a measuring range of 30-130 dBA and an accuracy of ±1.5 dB, it also ensures fast response and high sensitivity. Noise Test: The noise meter can test the decibel to show the sound level, and provide you with real-time data. WIDE USAGE Allows a wide application for detection in factories, offices, homes, schools, restaurants, hospitals, etc. BETTER DESIGN Comfortable hand feeling along with non-slip design and digital display greatly simplify operation. EASY CARRYING Compact in size and light in weight, the easy carrying makes it ideal for indoor and outdoor use. Specification: Item Type:Sound Level Meter Material: ABS Battery: 3 x 1.5V AAA battery (without battery) Function: Sound level detection Measuring range: 30 ~ 130 dBA. Accuracy: ±1.5dB (94dB, 25°C ±2°C). Resolution: 0.1 dB. Frequency range: 31.5 Hz to 8 kHz. Frequency weighting: A. Package list: 1 x sound level meter. 1 x user manual (English language not guaranteed). Package List 1 x Sound Level Meter 1 x User Manual