Oscilla® SM930 is a very versatile screener audiometer. It supports 3 automatic hearing tests (20 dB, 20 dB random and Hughson Westlake) and features a built-in memory of 90 audiograms. Furthermore the audiometer can be connected to a printer through the parallel port and transfer data to software programs like AudioConsole through the serial port. Specifications: 11 frequencies: 125 - 8000 Hz -10 dB to 110 dB in steps of 5 dB Manual or automatic test (3 automatic tests) Storage Capacity: 90 audiograms Serial and Parallel port (option of customizing printer-type) Pulse tone Programable setup functions for additionel features AC Adapter 12V(220-240 V)