Optimize your control over AC electric tools with this high-performance Electronic Voltage Governor, designed to regulate speed, temperature, voltage, and light intensity with precision and reliability. Featuring a robust ABS flame-retardant insulated shell and advanced internal components, this speed controller provides safe and efficient power management for a variety of compatible appliances. Key Features: · Wide Application Range: Effectively controls exhaust fans, filament bulbs, electric furnaces, angle grinders, marble machines, blowers, and more. Note: Not suitable for appliances with circuit boards or capacitance electronic components such as microwave ovens, induction cookers, rice cookers, water pumps, washing machines, LED, or energy-saving lights. · Durable & Safe Construction: Crafted with premium ABS plastic that is flame-retardant, heat-resistant, and resistant to discoloration, deformation, and cracking. The thickened phosphor bronze internal fittings enhance reliability and extend the product's service life. · High Precision Voltage Regulation: Equipped with a precision pressure regulating knob providing accurate voltage adjustment with control precision up to 1 volt. The integrated 3-digit digital display offers real-time voltage monitoring with a clear LED screen for easy operation. · Overload and Overvoltage Protection: Features an independent voltage control switch with built-in overload and short circuit protection. Automatically powers off when instantaneous current exceeds 15A, safeguarding both the device and connected equipment. Indicator lights provide visual status feedback. · Convenient Back Hook Design: Includes a specially designed hook on the back for easy attachment to tool bags or kits, enhancing portability and ease of use. Plug and play operation ensures straightforward installation and control. Specifications: · Plug Types: US / EU / UK / AU (Optional) · Product Name: Electronic Voltage Governor · Input Voltage: AC 100~120V (US), AC 220~240V (EU, UK, AU) · Output Voltage: 0~120V (US), 0~220V (EU, UK, AU) · Maximum Power: 4000W · Load Power: 2000W · Maximum Current: 15A · Load Current: 9A · Material: ABS Plastic · Item Dimensions: 12 x 6.5 x 5.5 cm (4.72 x 2.56 x 2.16 inches) · Package Dimensions: 15 x 12 x 11 cm (5.9 x 4.72 x 4.33 inches) · Package Weight: 500g (17.64oz) Package Includes: · 1 x Electronic Voltage Governor This Electronic Voltage Governor offers precise control and enhanced protection, making it an essential accessory for effectively managing compatible AC-powered tools and appliances. Its durable design, accurate voltage adjustment, and comprehensive safety features ensure reliable and safe operation for various applications.