Bogen Communications, Inc. VAR1Product Attribute Attribute Value Overview The VAR1 Voice Activated Relay is a DPDT relay device that is activated when an audio signal is detected at the microphone pre amp or at 70V, 25V, or 600 ohm line level inputs. It has a number of useful applications, such as muting a sound system in response to a microphone or telephone page, activation of accessory (security) equipment, or activation of a zone paging module. A slide switch is included to