We call it The Trigger. It's a Loudness Monitor - that is, the 
built-in microphone continuously measures the noise level in the room 
and displays it in coloured LEDs up to a pre-determinded level of 
loudness you pre-set from 79dB to 109dB in 3dB steps.
You can use it as a stand alone product with the 24V DC Powerpack 
supplied. Alternatively, you can connect it up to The Gov^nor, for the 
additional cost - it's our Sound Pressure Level Limiter. Connect the two
 items using 2 pairs of a Cat 5 cable run. 24V goes up one pair to power
 it while the control signal comes down to the Gov^nor on another pair 
to 'trigger' the limiting action. Either way, once it's set at the 
maximum level you want in that room the top 3 Red LEDs will tell you 
when you are there and The Gov^nor will hold it at that level.
The Loudness Monitor measures sound in either A Weighting (required 
by Government Authorities) or C Weighting (recommended by audio 
engineers if too much bass is the problem). The Fitness Audio Trigger 
& Gov^nor are simple solutions to continuing problems at many venues
 - not just fitness clubs either!