Voltage Stabilizer 1)CE and ISO Certification 2)AVR: SX460,SX440,AS440, ... ,R230,YH-8A,YH-12A,etc. Voltage Stabilizer SX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator(AVR) and ... 30 HzUnit power dissipation12 watts maximumBuild up voltage4 volts Voltage Stabilizer