Input： battery voltage:Optional battery type(optional); Battery rated voltage:48VDC; AC input volatage range:85V-135V; AC input frequency:60Hz(55-65Hz); Ouput: Conversion efficiency ≥90%; Ouput voltage:120VAC/240VAC±3%(battery mode); Output frequency:±0.5Hz(battery mode) ; Output wave form:pure sine wave. Other: Protect:with over-voltage,overload,low-voltage,high-temperature and short-ciruit protection. Display:LCD and LED dispaly; cooling way:intelligent speed control air cooling; Communication interface; RS-485 AC charging:AC charging voltage:13.4-14.9VDC(12V) is adjustable AC charge current:The charging current of 0-35A is adjustable. Work Environment:Temperature:-25°C - +75°C Humidity:<90%(No dew). Working Mode Setting: 1.AC Input Priority--- Preferential use of municipal electricity, (household 110V AC) municipal power outage to battery power supply, municipal power to return to municipal power supply! 2.Battery priority mode----Priority should be given to battery power supply. After low voltage protection, the battery will be transferred to market power supply. When the battery is full, the battery will be transferred back to battery power. 3.ECO Mode---Load < 10% automatic sleep and stop output, load > 10% automatic boot back to normal inversion. 4.Generator Mode---Use an unstable AC voltage (such as an alternator) through the inverter's AVR regulator to make the output voltage more stable! 5.Unattended Mode---When the battery is low voltage, the inverter goes into standby state(Power saving state). When the battery restores the voltage value set by yourself (such as solar charging), the inverter will restore the normal output of the inverter, and realize unattended full automatic operation!