[Decibel Data Logger to PC] The digital sound decibel meter can record 32000 sets of data, and the data recording function is compatible with for Windows 10, 8, 7, Vista and XP. [Bar Graph Display] LCD digital display can display 3-digit decibel level value, auto-range bar graph level, time and date. [Exquisite structure, high accuracy] Wide measurement range of 30-130dB decibels, accuracy of +/-1.5dB, and resolution of 0.1dBA. [AC/DC Output] AC signal output: 4Vrms/full barometer, output impedance is approx. 600 ohms. DC signal output: 33mV/dB. [Wide Application] The noise pressure decibel meter is compact and easy to carry, and is widely used in offices, classrooms, noisy neighbors, environmental measurements, etc.<br><br>Our noise decibel meter with PC interface is compact and easy to use while giving you accurate readings over a wider range than comparable cheap sound meters (30 dB to 130 dB with an accuracy of +/-1.5dB and a resolution of 0.1 dBA). market. This noise tester offers data logging capabilities and compatible software (included in the kit) to capture data to a PC. Power Supply:4 x AA;1.5V battery(Not included batteries) Colour:Black Material:abs<br><br>Package Contents: 1 * Noise meter 1 * Data cable 1 * Reading CD<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.