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SCR Thyristor 4000 Watt 220V AC  Voltage Regulator Dimmer Electric Motor Speed Controller with display and buttonMaterial: Metal maximum power: 4000 w (resistive load connected)voltage regulation: Ac 10-220 v, starts from ac 10 v protection: Anti-peak, surge, rc absorption (eoc)size:  84cm..

SCR Thyristor High Power 6000W AC 220V Electric Voltage Regulator Dimmer Speed Control ThermostatThis product uses the original imported 41A thyristor. It uses 1.6 thick FR-4 high temperature resistant circuit board, the circuit design is reasonable, and the thickened welding circuit design is adopt..