Performance-Input supply voltage is 110V ~ 220V AC. Output voltage is 50V ~ 220V (output voltage is lower than input supply voltage). The maximum output power is 2000W. The maximum output current is 25 Multiple operations - Our speed controller can be used for electric stove, water heater heating, lighting dimming, low speed motor, electric iron temperature control. Get dimming, temperature adjustment and pressure adjustment effects. Application-Our products can be used for large electric appliances with power less than 2000 watts. Due to the high power, large appliances or small factories are sufficient. Selected materials-Thanks to the new high-power bidirectional thyristor, the current can reach 25 amps, which solves the overcurrent problem caused by the low resistance of the electric oven wire when cooling. Specifications-Module size: 1.85 1.38 1.06 inches (without buttons). Knob diameter: 0.79 inches. Net weight: 1.76 ounces. Usage: Connect this product in series in the circuit of the desk lamp or electrical appliance (i.e., disconnect the lamp or electrical appliance from one of the live or neutral wires and connect the two wires of product. The rotating rod of the rotary potentiometer can play the role of brightness adjustment, speed regulation, pressure regulation and temperature adjustment; it is very convenient to use. Parameter: Operating voltage: AC 220V Maximum power: 2000W Voltage regulation: AC 50-220V Size specification: high temperature resistant FR-4 circuit board 36MM * 48MM or more External size: 48MM * 60MM (button direction) * 28MM (high) Control silicon holding voltage up to 1200 volts / current 25A Operating ambient temperature: -20 C to 40 C Packing Included: 1 * AC motor speed controller