Honeywell Silent Knight IFP-2000 Module 3 Installation Manual page 24

Modules can be distributed among the 2 FACP
SBUS circuits and RPS-1000 SBUS in virtually any
combination
Each additional RPS-1000 provides an additional
SBUS with 1A
Each additional SBUS has a max distance of
6000 ft
Additional Amps Additional Amps