HBC-PSW type, LCD display ,veritical type,pure sine wave HBC-PSW1000VA, HBC-PSW2000VA, HBC-PSW3000VA, HBC-PSW4000VA, and HBC-PSW5000VAService occasions:Microcomputer systems, communication systems, hospitals, ... : HBC is the external connected batteryUndercover voltage protection: single 12V battery, us14.5-15V (other voltage is multiplied) HBC-PSW type pure sine wave inverter/charger(converter)