Extra Heavy-Duty Surge Protective Duplex Receptacle offers increased transient protection, reliability and protection notification (Audible Alarm with LED Indicator). Back & Side Wire, 15amp 125volt, Brown.FEATURES AND BENEFITS:• RoHS Compliant• Solid-state LED monitor has 25-year minimum life expectancy. A high visibility, wide-angle lens indicates protection is in place.• LED Indication: Steady green = protected, Flashing re = not protected, OFF = no power to unit• Audible alarm alert of MOV damage. Alarm able to be turned On/Off.• Wrap-around steel strap for structural integrity. Auto-ground is standard, for easier installation.• Impact-resistant thermoplastic exterior resists impacts and scrapes.• Triple-wipe, copper-alloy contacts for superior, more dependable connection.• External screw-pressure-plate back and side wire terminals including ground with external back wire clamps (exclusive) accept #14 - #10 AWG copper or copper-clad, solid or stranded conductors. External pressure plate feature allows two conductors to be terminated by a single screw.• Thermal protection in 3 modes. 3 17mm dual pack MOVs absorb up to 340 Joules of excess energy in each leg (L-N, L-G, N-G) with 24,000 amp current handling capability for full, equal and symmetrical protection. Protection response time in less than one nanosecond.