Photo 1 of AITIAO AC 220V 4000W High Power SCR Electronic Voltage Regulator 110V-220V Motor Speed Control Voltage Power Heat Regulator Governor Thermostat Dimmer(4000W)

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Photo 1 of AITIAO AC 220V 4000W High Power SCR Electronic Voltage Regulator 110V-220V Motor Speed Control Voltage Power Heat Regulator Governor Thermostat Dimmer(4000W)Photo 2 of AITIAO AC 220V 4000W High Power SCR Electronic Voltage Regulator 110V-220V Motor Speed Control Voltage Power Heat Regulator Governor Thermostat Dimmer(4000W)