Oscilla® SM960-D is a diagnostic memory audiometer with numerous features when conducting diagnostic hearing tests. The audiometer supports 3 automatic hearing tests (20 dB, 20 dB random and Hughson Westlake), Bone Conduction and 3 types of masking including Narrow Band Masking. Other features include built-in talk through and talk back monitor. The audiometer may also be connected to a printer through the parallel port and transfer measurement data to software programs like AudioConsole through the serial port. Specifications: 11 frequencies: 125 - 8000 Hz (selectable) -10 dB to 110 dB in steps of 1 or 5 dB 2 channels Masking: Narrow Band, Speech, Noise and White noise Free field Insert ABLB SISI Pulse tone Warble tone Talk through / talk back Manual and automatic test Serial and Parallel port Programable setup functions for additionel features AC Adapter 12V(220-240 V)