step-up & step-down transformer POWER:50VA,75VA,100VA,150VA200VA,250VA,300VA,350VA500VA,750VA, ... is an ideal step-up & step-down power. It can, effectively, have the voltage drop from 200V to 110V or climb from ... is suitable for imported electric devices. 110V-->220V220V-->110V up-down transformer HBD,new type