Specifications include, but are not limited to: UPS or Battery Back-up System True online, double conversion topology Capacity = 1500VA, 1050 Watts Minimum Transfer Time = 0 Milliseconds Input Voltage Range = Single Phase 80 V ~ 144V Output Waveform = True Sine Wave Output Voltage = Single Phase 120V (+/- 2% Regulation) DC Bus Voltage = 24VDC nominal Battery Quantity and Type = Minimum of 6 Batteries; 24 V 18 AH AGM/VRLA (Absorbed Glass Mat/Valve Regulated Lead Acid) Compact, Lightweight Only – Batteries not to exceed 26 lbs. Overload Capacity = 120% for 30 Seconds, 150% for 10 Seconds Input Surge Protection = Per IEEE C62.41 LCD Display = High Contract Four (4) Line Interactive LCD Panel Temperature Probe = Connector on Rear Panel Including Externa Probe