APC Power-Saving Back-UPS Pro 900 , 230V, CEE 7/5 APC Back-UPS Pro , 540 Watts /900 VA, input 230V/output 230V, Interface Port Optional Simple Signalling RS232 cable, USB - LCD Status Display - Simple battery replacement - Automatic Voltage Regulation (AVR) - Green Mode - Boost and Trim Automatic Voltage Regulation (AVR): Gives higher application availability by correcting low and high voltage conditions - Audible Alarm: distinctive low battery alarm : overload continuous tone alarm - Automatic self-test - Power-saving outlets - Battery and surge protected outlets - Cold-start capable - Dataline surge protection - Battery failure notification - USB connector - Intelligent battery management - Customizable voltage sensitivity - Transformer-block spaced outlets - Surge only outlets - Resettable circuit breaker - Disconnected battery notification - Operating Environment 0 - 40 °C - Operating Relative Humidity 0 - 95% - Operating Elevation 0-3000 meters - Storage Temperature -15 - 45 °C - Storage Relative Humidity 0 - 95% - Storage Elevation 0-15000 meters - Audible noise at 1 meter from surface of unit 45.00 dBA - USB cable - User Manual 100 x 382 x 250 mm - Output Power Capacity 540 Watts - Nominal Output Voltage 230V - 3 outputs Battery Backup - 3 outputs Surge Protection - Waveform Type Stepped approximation to a sinewave - Built-in Bypass - Replacement Battery: APCRBC123 - Optional Simple Signalling RS232 cable, USB - Surge energy rating 613 Joules