Voice-Activated Relay - VAR1

The VAR1 is a relay device that monitors audio activity over a wide range of input voltages and operates two sets of C-Form relay contacts in response to detected activity. 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. A low-level output of the detected audio, transformer-isolated from the input, is also made available for use with other equipment. The VAR1 can also be used as a balanced, low-impedance microphone pre-amp.

Features:

• Monitors audio activity over a wide range of input voltages
• Two sets of C-Form (both N.O. and N. C.) relay contacts respond to audio activity
• Four levels of signals: microphone, 600-ohm line, 25V, and 70V speaker systems
• Built-in balanced, low noise, high gain microphone pre-amp
• Transformer-isolated, 600-ohm small signal level output of detected audio available
• Works with self-amplified or central-amplified paging systems