... it owns functions of output time delay, under voltage indication, over voltage protection, overload protection etc. When the product is ... in condition of over voltage or under voltage, letter H or L will appear and ... Specification 500VA,1000VA,1500VA,2000VA,3000VA,5000VA,8000VA,10000VAInput voltage rangeAC125V-260VOutput VoltageAV220Vvoltage stabilizing precision ±7.5%Frequency ...