The Mean Well HLG-185H-42B is a high-efficiency, LED driver power supply with a slim 42mm form factor. It is designed to be used in LED lighting applications such as indoor and outdoor LED spotlights, LED panel lights, LED ceiling lights and LED stage lighting. This LED driver is rated for 185W of output power and has a wide input voltage range of 90-305VAC. It has a high power factor of 0.99, low total harmonic distortion of < 20%, and high efficiency of up to 90%. It also has adjustable output voltage and current, dimming capabilities, and active PFC. The HLG-185H-42B is fully compliant with global safety regulations and carries certificates such as UL, CE, CB, and SAA.