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The 6815 is a signaling line circuit (SLC) loop expander for use with Honeywell 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 supports 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.
The 6820 and 6820EVS panels support up to 1,110 maximum points and come with one integrated SLC. Each added 6815 can support an additional 159 SK devices, and 159 SK modules.
The 6815 can also be used for SWIFT® wireless detection. SWIFT wireless devices communicate with the FACP through a gateway (WSK-WGI) that connects to the SLC using SK protocol. The integrated SLC, or a 6815 SLC, can be used for this purpose. SWIFT devices can also be combined with hard-wired devices on the same SLC for additional versatility. The result is more flexibility and design options when hard-wire solutions are problematic.
The 6815 communicates with the FACP via an RS 485 system bus. A green LED on the 6815 board blinks to indicate good communication. If an addressable device on a 6815 fails, the loop communicates the failure to the 6820 and 6820EVS and continues to operate normally
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