The Mesa Series is a single phase, standby, solid-state inverter system designed to provide “soft-start” power to designated emergency lighting fixtures. Each system consists of a self-contained inverter section with a fully automatic, thermal-compensating, variable-rate battery charger. The Mesa series is designed to function in conjunction with the existing building electrical system to provide Pulse Width Modulated (PWM), sinusoidal, high-quality power conditioning, backup power protection and distribution for lighting loads and other critical loads. Upon failure of the normal utility power, the Mesa Series automatically transfers to inverter mode and provides a minimum of 90 minutes of emergency power to the connected load. Lumen output will be maintained at 100% of the lamp’s rating throughout the duration.