The VM-3240VA is a multifunctional amplifier that can be mounted in an EIA-Standard equipment rack (3-unit size). The unit comes with audio inputs including the background music input, and the speaker output section which has an internal attenuator and 6-output selector. It permits not only general-purpose broadcast, but also Emergency broadcast based on the EN60849 Standard which gives pre-recorded voice instructions in the emergency situation. Emergency broadcast can be made from an optional RM-300MF Fireman's Microphone as well as from the amplifier, and can be remotely controlled from external equipment. In addition, the unit features the surveillance function which automatically checks the system for failures.