automatic voltage regulator 1.OEM factory 2.Passed CE/ISO Cert 3 ... in family,factory,laboratory and hospital,etc.Atomatic Voltage Regulator Product Features 1,Input Range: 125V~270V( 4 relays) 100V ... main products are voltage stabilizers, voltage regulators, inverters, voltage regulator ,silicon rectifying chargers, low voltage apparatus, reactors, current transformers, voltage transformers and circuit ...