This Wirepath™ expansion module allows 4 telephone lines to expand to an additional 16 telephone connection ports. Plus, it also functions as an expansion module for the WP-MOD-RJ45-TEL. Without a security interface, this product can be used as a base telephone module or an expansion module using one of the two IN/OUT RJ45 jacks.
Wirepath™ Telephone Expansion Module with 16-RJ45 Jacks and Loop IN/OUT
This Wirepath™ expansion module allows 4 telephone lines to expand to an additional 16 telephone connection ports. Plus, it also functions as an expansion module for the WP-MOD-RJ45-TEL. Without a security interface, this product can be used as a base telephone module or an expansion module using one of the two IN/OUT RJ45 jacks.
Base Telephone Module or Expansion Module
Great for using as a base telephone module or use a short jumper cable to expand the WP-MOD-RJ45-Tel1X12. 
Fits Most Structured Wiring Cans
Designed with universal mounting capability that allows you to use this in almost every structured wire can.