Features: Flame retardant metal shell for enhanced safety. No hysteresis, no delay, equipped with top voltage absorption circuit to effectively protect high power thyristor. Anti-surge, anti-spike, and RC absorption for multiple protection. The controller can adjust temperature, speed, light, and voltage. Wide range of applications. Suitable for household appliances, industrial appliances, scientific test equipment, factories, schools, and other electrical equipment. Specification: Model: WBT-4000W Plug: AU Plug Input Voltage: 220VAC Output Voltage: 0–220V (Adjustable) Maximum Wattage: 4000W Rated Current: 9A Maximum Current: 18A SCR Model: BTA41-600B/800B Package List: 1 x Electronic Controller Note: Please note that plug adapters are not included. The product may be shipped in either new or old version randomly. Please ensure you are comfortable with this before placing your order.