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Audio Monitoring Kits
Audio Monitoring Kits



The ASK-4®#631 is a single zone audio monitoring system with a wall mounted mute switch. This system is designed to interface with a NVR, video system or other recording devices that accept line level input. The IF-1 Audio interface contains a volume control for the line level output to recording devices. The Verifact® A is microphone is designed for ceiling. The MS-1 is an illuminated mute switch that can use to mute the microphone output. It is commonly used for interrogation rooms.


  • Single zone audio interface
  • Provides 12 Vdc power to the microphone
  • Volume control to prevent overdriving
  • RCA and 3.5 mm audio outputs
  • Compatible with most recording devices that accept line level audio input

Verifact® A :

  • Omni-directional, within 30′ diameter circle
  • High impact anti static ABS microphone housing
  • Can be placed up to 1000′ away from the base station

MS-1 :

  • LED rocker switch on stainless steel, single gang faceplate
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5-Year warranty
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Audio Monitoring Notice

When this equipment is used as part of an audio monitoring system, the law requires that the public be given notice of AUDIO MONITORING ON THE PREMISES.
Two decal notices are included with each microphone shipped.

Federal Law References: Federal Regulations, US Code, Title 18, Crime and Criminal Procedure. Sec 2510.


What's in the box

Verifact A, IF-1, MS-1, AD-1, Single RCA Cable, 3.5mm Stereo Cable, RCA to 3.5mm Plug (All cable lenghts 6ft.)

Installation Requirements



  • Encoders
  • IP Cameras
  • NVR

Use Cases


6.125″ L x 4.625″ W x 1.375″ H
4″ Diag. x 1.5″ H
2.75″ W x 4.5″ H

Product Comparison

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Mute Switch Included
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Rack Mount Included
Requires Two-Way Base Station
Sensitivity Switch: Normal/Low
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Voltage Requirement
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Have a question about the ASK-4®#631? Contact us directly.
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How to Buy

United States and Canada
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Latin America
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Other Worldwide Regions
For regions outside of North America, Latin America and the Caribbean, please contact Louroe directly at (888) 265-8474 or via email on our contact form.
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