The Mean Well SRS-4812 is a 48-volt DC power supply from the Single Output LED Driver series of Mean Well's power supply units. The SRS-4812 has a power rating of 12 watts and features an onboard terminal block, as well as a potentiometer for output current adjustment. It is a constant voltage driver meant for powering LED lighting, such as street lighting, traffic lighting, down lighting, and track lighting. Further, it is certified for UL, cULus, CE, PSE, EAC, FCC, and SAA safety regulations. The SRS-4812 is a highly efficient power supply with an efficiency of up to 94% and has a wide operating temperature of -40 to +90°C.