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The VAR1 is a relay device that monitors audio activity over a wide range of input voltages LI>The VAR1 can be used to detect voltages as low as signals directly from a microphone or as high as signals from 70V speaker systems.
Operates two sets of C-Form (both N.O. and N.C.) relay contacts response 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
Adjustable release delay
0.25s to 25s
Separate microphone pre-amp gain control
Relay active indicator light
Trigger threshold adjustment
Requires 12V to 24V DC @ 100mA