This is an excellent quality ETL Listed Triac dimmable power supply. Compatible with most AC wall dimmer including Lutron, Leviton and most other household dimmers. Can be used for many LED lights and other applications. Requires no minimum load and it is very quite without any buzz or humming noise. Warning: Do not overload. Overload will cause the AC adapter to fail. We are not responsible for misuse of the power supply. It is recommended not to exceed 80% or 40w of AC adapter's capacity. Please calculate your load before connecting the power. Specification: Output Frequency: 50/60HZ Output Current: 4.16A Output Voltage: 12V Input Voltage: 100V-130V Package content: 1 Piece ETL Listed 4.16A 50W 12V DC dimmable Power Supply All items will be tested before shipping to ensure functionality of the product. we do wholesale, please E-mail us for volume pricing. Local pick up is always welcome! Refund given as Money Back Return shipping paid by: Buyer View more great items