Products Features: 　　1. True pure sine wave output 　　2. Power factor up to 0.8 　　3. All digital control processor 　　4. Green power technology 　　5. Battery management technology 　　6. Network monitoring technology 　　8. Adjustable AC charging voltage and charging current 　　9. Large surge power protection and Multiple protection technology 　　Prostar 3KW 48VDC Low Frequency Battery Management Power Inverter has passed the international ISO9001, ISO14001, TUV, CE,RoHs,TLC, international Certification Network of IQnet certification. Prostar giving customers great confidence with the strict and careful quality management. 　　This Power inverter can be used in residential house, commercial shop which is convenient to power your load application easily when the mains power off. So this product is suitable for poor utility power supply environment. 　　Now consult us about the 3KW 48VDC Low Frequency Battery Management Power Inverter or solar product for free. http://www.prostarinverter.com/product/3kw-48vdc-low-frequency-battery-management-power-inverter