Specifications include, but are not limited to: PowerRide 1 Emergency Lighting Inverter; 10,000 Watts, 277 Volts in, 277 Volts out, 1 phase 60 Hz UPS with 90-minute runtime, UL 924 Compliant. NEMA 1 (1 cabinet 51”W x 70”H x 30.5”D) 10.1.1 Back-lit LCD display 10.1.2 RS 232 & RS 485 ports for metering, measuring, and diagnostic 10.1.3 Prewired for optional Global Monitoring System 10.1.4 Battery breaker 10.1.5 Inverter test switch 10.1.6 Generator compatible with automatic governor 10.1.7 Battery management software 10.1.8 High frequency pulse-width modulation (PWM) with digital signal processing technology 10.1.9 Built-in input power factor correction 10.1.10 Automatic monthly and annual self-testing 10.1.11 Continuous self-diagnostic and self-testing system 10.1.12 Sealed maintenance-free lead calcium batteries with 10-year warranty