General description This 220V AC 4000W High Power SCR Voltage Regulator is designed for controlling the speed, voltage, and temperature of various electrical appliances. It features a high-performance bidirectional thyristor and is suitable for resistive loads, making it ideal for applications such as electric stoves, water heaters, lamps, small motors, and irons. Technical specifications Operating voltage: 110 V - 220 V AC Maximum power: 4000 W (resistive load) Voltage adjustment: 0 to 220 V AC Size: 91 mm x 59 mm x 34 mm (without handle) Model: ZS-PA4000A Maximum current: 20 A Installation Connect the input end of the regulator to a 220 V AC power source. Connect the output end to the cable of the electric appliance. Usage Turn the potentiometer to adjust the speed, voltage, and temperature. Use primarily with resistive loads; for inductive or capacitive loads, reduce power consumption significantly. Ensure not to exceed the specified maximum current load to prevent damage to the