APC REMOTE POWER-OFF DEVICE AP9830 - Manual (Page 18)

Remote Power-Off Device — Installation and Quick Start 15
Configuration and Setup: Set up the Remote Power-Off Device
Note
In the following set-up diagram, note that the
RJ-11 cable connects to the middle port, labeled
RPO / Cascade In.
 APC UPS
 Keystone jack
 Wiring to remote switch
 Server
 Cable provided with UPS software
 RJ-11 cable
 Remote Power-Off Device
 Cable supplied with Remote Power-Off Device