Made from strong metal, solid and durable. Compatible DC 12V-24V LED rotary dimmer switch. Can be used to adjust LED lights' brightness, 0-3 - step-less adjusting, by adjusting lumen output so as to save power and extend LED's serving life. The PWM number darkens, avoiding shock current and protecting your LED lights Suitable for single color led lights and strip lights, can be apllicated to home, commercial lighting area and leisure place ect. Specification: Material: Metal Size: Approx: 85x60x20mm / 3.35x2.36x0.79 inch Working Temperature: -20~60 Voltage: DC 12-24V Input Current:<30A Output Power: 12V<360W,24V<720W Package Includes: 1 Piece LED Dimmer 1 Piece User Manual Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color of the pictures and the actual item.