The ELG-150-24 is a 230V LED power supply / metal housing driver, constant voltage and current called CV + CC mode. Depending on the ELG power supply model, there are so-called 3u1 diming options, Smoothing 1-to 10V, 10V PWM and immersion potentiometer, for ELG-150-24 B ilis ELG-150-24 DA gave control Built-in active PFC function, utility up to 89% Short circuit protection, overcurrent, overvoltage and overheating (over temperature)