Range master, advanced parmak fence charger, digital performance meter shows voltage on fence, accurate within 100v, ultra high visible, multi-colored led lights show condition of fence, audible & visible shut down alarm sounds when fence charger is not functioning properly, low impedance, over 12.5 joules of shock output power to control livestock or predators, advanced computer controlled circuitry, rugged, high impact abs housing, color coded fence & ground terminals, charges over 100 miles of fence, for indoor installation, full 2 year warranty, includes damage caused by lightning, ul listed.