Automatic Voltage Regulator We supply AVR: SX460,SX440,AS440,MX321,MX341,R230,R448,R449,R438,SE350,YH-8A,YH-12A,YH-15A,etc. Automatic Voltage RegulatorSX460 ... is a half-wave phase-controlled thyristor type Automatic Voltage Regulator(AVR) and forms part of the ... humidity 0-70c95% (see note 5)Storage temperature-55 to Automatic Voltage Regulator