AC Voltage Controller, Motor Speed Controller, Bulb Dimming Function: 1. Special design 1.6mm thick FR-4 high temperature resistant circuit board. 2. Safe and reliable, capable of handling large currents. 3. Dual capacitor design: Safety capacitor and metal film capacitor protect the SCR more effectively. More efficient and safer. 4. 1.5mm thick aluminum and stainless steel case, suitable for family temperature control and speed control, and for use in industrial enterprises. 5. Beautiful, simple, safe, convenient, and high-quality product. Will not rust even after long-term use. 6. Mainly suitable for resistive loads. Such as lights. 7. Made in China, no instructions, no support. Specifications: Voltage Range: 10V-220V Maximum Power: 200W Net Weight: 41.8g Operating Voltage: AC100V-AC220V Body Size: 48x35x30mm Thank you for viewing.