MP fax surge suppressor for modem Tripplite modem protector surge rj11 for fax and telephone upc 037332010230
this is a direct plug-in suppressor providing protection on one RJ11 phone line. It is ideal for protecting phone systems, modems and fax machines from surges and spikes that may enter from phone line connections. Includes a 12 ft. phone cord and grounded male plug connection for convenient installation.