Bogen Communications VAR1 Voice-Activated Relay for Paging Systems

The Bogen Communications VAR1 Voice-Activated Relay is a DPDT relay device that is activated when an audio signal is detected at the microphone preamp 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 select the pre-amp or the line inputs. The VOX detect circuit also includes volume, sensitivity, and delay controls. The audio output is an isolated 600-ohm transformer. The unit operates from a DC power source (not included).

• Two sets of C-Form (both N.O. and N.C.) relay contacts respond to audio activity
• 4 levels of input signals: microphone, 600-ohm line, 25V, and 70V speaker systems
• Built-in balanced, low noise, high gain microphone pre-amp
• A transformer-isolated, 600-ohm small signal level output of the detected audio available
• Trigger threshold adjustment
• Adjustable release delay – 0.25s to 25s
• Separate microphone pre-amp gain control
• Relay active indicator light

Spec Sheet

Manual