Description
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 am Transformer isolated, 600 ohm small signal level output of detected audio available Works with self amplified or central amplified paging systems Separate microphone pre amp gain control Adjustable release delay 0.25s to 25s Trigger threshold adjustment Relay active indicator light Accessories PRS40C 12V DC Power Supply Sold separately