[Decibel Data Logger to PC] The digital sound decibel meter can record 32,000 sets of data, and the data recording function is compatible with Windows 10, 8, 7, Vista, and XP. [Bar Graph Display] LCD digital display shows 3-digit decibel level value, auto-range bar graph, time, and date. [Exquisite Structure, High Accuracy] Wide measurement range from 30 to 130 dB, accuracy of +/-1.5 dB, and resolution of 0.1 dBA. [AC/DC Output] AC signal output: 4 Vrms/full scale, output impedance 600 ohms. DC signal output: 33 mV/dB. [Wide Application] The noise pressure decibel meter is compact and portable, suitable for use in offices, classrooms, environmental noise monitoring, and more. This noise decibel meter with PC interface is compact and easy to use, providing accurate readings over a wide range (30 dB to 130 dB) with an accuracy of +/-1.5 dB and a resolution of 0.1 dB. The device features data logging capabilities and includes software for capturing data to a PC. Power Supply: 4 x AA 1.5V batteries (batteries not included) Color: Black Material: ABS Package Contents: 1 x Noise Meter 1 x Data Cable 1 x Software CD Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.