Great switching power supply for home appliances design with built-in emi filter, improve signal precision. Approvals: 3c/fc/ ce emc standards: according with gb9254, en55022 class a, en61347-2-13: 2008 standards certifications: ce & rohs meet cec energy efficiency level iv. Power LED monitor (LED Glow when in Use) category - switch mode power adaptor (SMPS) mtbf ;50, 000 hours in-door use only this power supply unit "does not" comes with installation instruction, wiring cable, on/off switch, or screws. Professional installation of qualified electrician is highly recommended. That design and color may change from the picture shown above 12volt 5amp, 60w smps/ power supply: input voltage: AC 90 - 264v 50/60hz output voltage: 12v DC, 5a, and 60watt output voltage: adjustment eange: ±20% output voltage type - DC current shell material: metal case/aluminum base color: sliver weight: 380g approx dimension: 158 x 98 x 42mm approx how to connect l, n: AC power input v+: DC.