Input: Power factor - >-0.99, Harmonic distortion (THD): 2% (100% Nonlinear load), Bypass voltage range: Max. Voltage: 220V +25% (optional +10%, +15%, +20%) 230V 20%. Generator input: Support. Output - Voltage regulation: + - 1%, Power factor: 0.8/0.9 (Customized), Crest factor: 3:01, Harmonic distortion (THDv): <-2% with linear load, <-5% with non linear load, Efficiency: 94.5%. Battery Type: 12V/38Ah (Standard unit), Transfer time: Utility to Batter : 0ms; Utility to bypass: 0ms. Overload - Line Mode: Load <-110%: last 60min, <-125%: last 1min, >-150% turn to bypass mode immediately. Bat. Mode: Load <-110%: last 10min, <-125%: last 1min, <-150%: last 5S, >-150% shut down UPS immediately. Short circuit: Hold Whole System, Overheat: Line Mode: Switch to Bypass; Backup Mode: Shut down UPS immediately, Low battery voltage: Alarm and Switch off, Self-diagnostics: Upon Power On and Software Control, Battery: Advanced Battery Management, Audible & Visual: Line Failure, Battery Low, Overload System Fault, Status LED & LCD display: Line Mode, Bypass Mode, Battery Low, Battery Bad, Overload & UPS Fault, Reading on the LCD display: Input Voltage, Input Frequency, Output Voltage, Output Frequency, Load Percentage, Battery Voltage & Inner Temperature. Communication interface: RS232, RS485, Parallel, Intelligent slot, Relay card (optional), SNMP card (optional).