The listing, Panamax TowerMax CO/4X4 Surge Suppressor Add-on Module has ended.
It is a Used 4 Line Co Module (8 RJ11/45 jacks)Surge Processor.
Features:
Expandable module for TowerMax-KSU
260v protection
Protects up to 4 Co telephones lines
Pretects pins 4,5 on a RJ11/RJ45 jack
RJ11/45 copmpatible
3 screw install to any TowerMax module
Can be used by itself with proper ground connection
Auto resetting solid state sneak current protection
Same as AVAYA part#8310-004
Replaces: Avaya/Lucent 146C & GUM0504