-500W AC Automatic Voltage Regulator -Servo control,single phase -110V & 220V outlet ... CE,ISO9001 approved [RAGGIE]SVC-500VA Servo Motor Control Full Automatic Voltage Regulator Features:1. Servo Motor Technology is used2. ... used for office equipment, test equipment, medical equipment, industrial automation equipment, household appliance, lighting system, communication system and etcTechnology ...