The SLC2 is a single rack space Sound Pressure Level meter
with special triggering circuits. When monitored sound exceeds a
specified level, a relay connected to a
switched output is
activated. The switched output
can then activate
connected ancillary equipment which can be used to notify the
manager, light a light, ring a bell, or activate a compressor.
It can even be used to activate a counter to determine how often
sound exceeds the specified level. The choice of ancillary
equipment is made by the installer to accommodate the particular
situation. The SLC2 does not contain audio attentuation
circuitry, only triggering circuitry.
Triggering Circuit: This circuit will respond when the
SLC2 monitors a sound which is over the user's specified level.
A switched output control relay and an audio attenuation circuit
will be triggered.
Switched Output Controls: The SLC2 provides a
rear panel mounted terminal strip to which an installer can
connect ancillary equipment suitable for the installation. This
terminal strip becomes "active" when the switched output control
relay is triggered. Connected equipment can range from a simple
light bulb to a heavy duty solid state relay capable of handling
multiple announcement devices.