The Tandem Master is a Morse code computer interface and mouse emulator designed for use by individuals with neurological, upper extremity, or severe physical disabilities or cerebral palsy. The unit has switch input jacks for Morse code input (switches not included), plus a USB connector jack and an external speaker jack for Morse code beeps feedback. Features include Morse code mouse functionality, Morse code initiated volume control and speed control, support for multiple menus (up to four) for different Morse code sets, and an LED indicator for current menus and code input. The unit is fully operational when plugged into a USB port. COMPATIBILITY: For use on IBM and compatible or Macintosh computers. WARRANTY: 1 year.