AVST (Audio verification Station) serves as a user interface in the
Audio Verification System and each station can cover a nominal (open
field) range of 2500 square feet. The system supports up to three
stations. Each station has a built-in microphone and speaker that send
audio signals to and receive audio signals from the Audio Verification
Module. The station has an internal volume control for setting speaker
For 2-way voice session operating instructions, refer to the Audio Verification System's Installation and Setup Guide.