APC P4V 4-Outlets Surge Suppressor - Receptacles: 4 x AC Power

Noise Filtering - Attenuates EMI/RFI line noise that can cause data errors and keyboard lockups, ensuring better performance of protected equipment. Transformer Block Spacing - Connect bulky transformer block plugs without covering up other outlets. Building Wiring Fault Indicator - This LED informs users of potentially dangerous wiring problems in the wall circuit. Fail Safe Mode - Most other surge suppressors continue to let power through even after their circuits have been damaged, leaving your equipment exposed to future surges. APCs SurgeArrest fail safe, which means that once the circuit of an APC SurgeArrest has been compromised the unit disconnects equipment from the power supply ensuring that no damaging surges reach your equipment.