Surge Protection: A soft start circuit is built inside to prevent an inrush current at the starting moment. Home circuit breaker not trip off at the starting moment. Toroidal Transformer: with ultra-thin ring-type transformer, slim, small size(6*17.5*22cm/2.36"*6.89"*8.66"), light weight(4kg/8.8LB), energy saving, quiet and high efficiency; CE & CQC Certified! 2 outlets: can use 2 equipments ( one is with 100V, the other one is with 110V) simultaneously, just the total power consumption not exceed the rated power(800W) of the converter. Safety: LED indicator clearly display input voltage and output power; The beeping tells you it's over-loaded. Continuous capacity: 800W rated power can run 7*24hours with full load.