Towermax CO/4x4 for up to 4 COlines RJ-11/45. Protects four CO lines. Features8 RJ-11/45 jacks through 4 ports (4 lines 4 equipment - pins 4 5 each port). Use with Towermax KSUbase unit. Includes four RJ-11 7-foot phone cords. Clamping level 240 volts.
-Lifetime product warranty with up to $50 000 connected equipment warranty