The Sentry Power Tower Expansion Module (PTXM) is our exclusive method for linking units on different power circuits together to increase the density of managed outlets per IP address and to manage group outlets on different power circuits.

Each PTXM links to a PTXL, which contains both network and serial interfaces. When linked to a PTXL, the PTXM’s power outlets are auto-discovered by the PTXL’s firmware, and all available outlets are viewable and controllable through the firmware.

An unlimited number of groups can be created between the PTXL & PTXM. Additionally, any combination of outlets between the PTXL & PTXM can be associated with each group.