A new type of bi-directional high-thyristor is used, capable of handling currents up to 25 A, which helps prevent over-current issues caused by low resistance in furnace wires during cooling. The product allows adjustable output voltage between 50 and 220 volts, suitable for electrical equipment with varying voltage requirements. The thyristor is primarily designed for resistive loads such as incandescent lamps. Most single-phase AC motors can also be used, though performance is not guaranteed. This product can control various electrical devices including lamps, fans, and motors. Maximum resistive load capacity is 2000 W; however, prolonged use at maximum load is not recommended. It is advised to keep the resistive load under 1000 W at room temperature. Specifications: Voltage: 220 V Power: 2000 W (maximum resistive load) Voltage adjustment range: 50–220 V AC Board: High-temperature resistant FR-4 circuit board Color: As shown in image Material: Composite material Dimensions: 48 mm x 60 mm x 28 mm Package Contents: 2 x Controller Note: Other items not included. Note: Lighting and display differences may cause slight color variations between the image and actual item. Measurement may vary by +/- 1–3 cm.