Sentry MK2 Cut Off Limiter

The Sentry MK2 Cut Off Limiter is designed to monitor sound levels and provide a trigger when a preset sound level is exceeded.

The trigger will normally be used to trip a contactor removing the mains power supply to the music system.


The Sentry MK2 is a cut off limiter, it removes the mains power to any equipment supplied through the contactor.


  • With an adjustable measuring range from 85 to 125db every possible eventuality can be dealt with.
  • There are 4 weighting curves linear, C, A and bass there are also two different level settings.
  • A large led display shows the operator how loud the noise and is visible from a distance.
  • An internal or external microphone can be used to measure the noise level.
  • Related Products:

AT-1 Automatic Volume Control
Contactor (Coming soon!)


Additional information

Product Manual

<a href="/wp-content/uploads/2020/08/Formula-Sound-Sentry-MK2-Manual.pdf" target="_blank">Download </a>

Product Leaflet

<a href="/wp-content/uploads/2020/08/Formula-Sound-Sentry-MK2-Leaflet.pdf" target="_blank">Download </a>


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