Signaling Line Circuit Expander 6815 The 6815 is a signaling line circuit (SLC) expander for use, Silent Knight 6820 or 6820EVS fire alarm control panels (FACPs)using

Signaling Line fire alarm Silent Knight 6820
Silent Knight 6820 or 6820EVS fire alarm control panels (FACPs)using
System Sensor® (SK) protocol. The 6815 signaling circuit has the same
functionality as the SLC that is built into the 6820 and 6820EVS panels
and support the same addressable devices as the one in each panel. The
number of 6815 SLCs that can be used within one system is largely
dependent on maximum available points. They provide a powerful way to
customize configurations in large or complex installs.