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Voice-Activated Relay for Paging Systems

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Regular Price: $242.70

Special Price: $127.41

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Product Features

  • 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


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  • VAR1


The 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).

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At Telcom & Data we strive for long term customer relationships, that' why we offer a 60 day 100% money back guarantee on ALL of our products. (Except Special Made-to-Order Products, including Wheelock MEDC and Explosion Proof Products)

If you are not happy with a product for any reason simply call us at 800-335-0229 and request a Return Authorization number for a full 100% credit. All returns require prior authorization, please. Returned items must be repacked in ORIGINAL packaging NO EXCEPTIONS. Telcom & Data wants to be your one stop telecommunications company. Let us know how were doing by calling 800-335-0229 and ask for extension 832.

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