SA 201 is a basic, manual, two channel, pure tone air conduction, screening audiometer with full frequency and output range. SA 201 is digital and RoHS compatible and thus, well adapted to the modern user and environmental concerns. SA 201 is user friendly, robust, reliable and yet affordable. You can easily configure a test set that suits your need of information. SA 201 can measure at 11 different frequencies starting from 125 Hz up to 8 kHz. SA201 has outputs for TDH-39 / Sennheiser HDA 200 earphones and EARTone 5A insert earphones. The built-in talk forward microphone makes communication easier.