Protects four lines RJ-11 45 connectors

Analog Station Set and Central Office Line Protector- Protects up to 2-wires 1-pair per jack. Using RJ11/45 connectors pins 4, 5- Auto-Resetting Technology: PTC resistors open when a surge occurs, protecting your equipment, but unlike other fuses, the PTCs close again once the surge passes.- Expandable modular system- Applications: Analog and Central Office lines for PBx or KSU - Agency Approval: UL 497A Secondary- Grounding Requirements: Uses Electrical AC Ground- Recommended Grounding Impedance: <0.5 Ohm- Signal Perfect Circuitry- Auto-Resetting PTCs: 160 mA 8-10 Ohms- Clamping Level: 260V- Response Time: 1-5 Nanoseconds- Capacitance: <50pF- Suppression Modes: Metallic and Longitudinal- Wires Protected: 2-wires 1-pair per jack pins 4, 5- Termination Type: RJ11/45