Voltage Regulator Motor Speed Controller - durable construction This motor speed regulator is built with durable materials to deliver long lasting performance and reliability. - Easy speed and voltage control Designed for AC 220V input with an output to a main line or electrical devices. Use the adjustment knob to easily tailor speed, voltage and temperature to your needs. - broad compatibility The thyristors used in this controller are suitable for most single phase AC motors, including incandescent lamp loads. For other load types, please confirm compatibility before use. - efficient and safe operation Maximum power 4000 W and efficiency over 90%. Provides stable, reliable performance with protection against spikes and overvoltage, plus RC absorption for additional safety. specifications and features - input: AC 220 V - output: to electrical line or appliance - max load: 4000 W - efficiency: > 90% - protects against spikes and overvoltage - RC absorption for enhanced safety use scenarios - workshop motor control: adjust the speed of a single phase motor driving a small tool or blower to achieve smooth operation and reduced noise. - heating and temperature control: regulate a heating element or oven line to maintain desired temperature in DIY or culinary setups. - lighting and filament loads: manage voltage for incandescent filament lamps to achieve desired brightness in vintage lighting applications. note This controller is compatible with many one phase AC motors and some resistive loads. For loads not listed, verify compatibility before use.