GZ Nianguan manufacture a broad range of power solutions. Ranging from solar panels, wind generators, "Grid Tie Inverter", automotive inverters, off grid controller/inverters, backup power solutions (UPS) ,water pump system and diesel generators etc.. We can do almost anything (reasonable). What is most important is what CUSTOMER need. Our specialty is complete power solutions. We often get very involved in our customers projects to help them maximize their profitability. Here at Guangzhou Nianguan Electronics Technology Co.Ltd. we pride our self on having excellent customer service with good English language skills. We have almost 24/7 availability on email, skype, msn, qq, yahoo etc... (24/7 emergency phone contact). Being responsive, precise and thorough is part of the core of our business philosophy. Welcome to contact us . 1000w pure sine wave with charger Rated Capacity:1500VA Rated Power :1050w No load current :less 1.2A Transformer : C.R.G.O Interface : LCD Display Status :working & loading & battery Input Voltage : 140~275 Vac Frequency :45~65 Hz Output Voltage : 220Vac ±1% for inverter; 220Vac ±8% for regulator Frequency : 50/60 Hz ± 0.5Hz, subject to the main Wave form : Pure sine wave Wave distortion : ≤ 3% Protections Overload protections:YES High temperature protections : YES Outputhigh/lowvoltage protections: YES Battery lowvoltage protections: YES Battery Over-charge, over-discharge, reversed polarity protection Short circuit : YES Transfer Time: LESS THAN 4ms Battery Voltage :24V DC Charge Voltage :27.6±0.5V Low Battery Voltage Limit :22V ±1V Battery Low Voltage Protection Point :21V ±1V Charge Current Max:10-20A Optional Cooling system: YES Environmental Operating temperature:0-40c Relative humidity : 10%~90% RH, non-condensing Storage temperature : -15c - 45c