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Bogen VAR1 Voice Activated Relay
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 line 25V and 70V speaker systems Built-in balanced low n Product Dimensions 8.00 L x 7.30 W x 3.00 H; Two sets of C-Form (both N.O. and N. C.) relay contacts respond to audio activity; Transformer-isolated, small signal level output of detected audio available; Works with self-amplified or central-amplified paging systems Monitors audio activity over a wide range of input voltages; Separate microphone pre-amp gain control; Adjustable release delay 0.25s to 

Price is $139.00
Price: $138.68