1. [Real Time Voltage Display] This speed controller features a display that shows the real time output voltage, making the working voltage of the machine clear at a glance. 2. [Automatic Shutdown Protection] The switch automatically cuts off power when the instantaneous current exceeds the maximum limit, ensuring safety during operation. 3. [Convenient Indicator Light] The speed regulator includes an indicator light, providing a visual cue to indicate operational status. 4. [Multi Functions] This electronic voltage regulator supports various applications, including speed control, voltage regulation, temperature adjustment, and light dimming. 5. [Safe Material] Made with a premium plastic shell, this speed controller is durable, heat resistant, and flame retardant for reliable long-term use. Plug Type: EU Plug Voltage: AC 220 V Color: As Shown Material: Plastic Package Contents: 1 × Speed Controller 1 × Hook 1 × English Instruction Manual Note: Light reflection and different displays may cause slight color variation between the image and the actual product. Measurement tolerance is ±1–3 cm.