This TRIPP LITE surge suppressor is designed to provide safe, reliable surge protection in harsh environments. A high 3900 J rating can protect connected equipment against even the strongest surges. Eight (8) outlets protect connected equipment against damaging surges, spikes, and line noise. Convenient transformer outlets accommodate multiple transformers without blocking other outlets. A 25 ft grounded cord with integrated cord clip reaches distant outlets. A lighted on / off switch with integrated circuit breaker provides power control over connected equipment. Breaker protects against dangerous system overload. Protected LED confirms that connected equipment is being protected. Four (4) safety covers shield unused outlets from debris and accidental contact. A rugged metal case stands up to the harshest environments. Built-in cord wrap with hang holes provides convenient cord management. Integrated keyhole slots on bottom panel provide convenient wall or desk mounting. Tripp Lite will repair or replace any connected equipment damaged by surges, including direct lightning strikes, up to $100,000 and for life! As an added safety feature, the surge suppressor's bright yellow color alerts you and others that power cords and tools are in use.