There are a total of 14 models in the THL 15WI series. There is a choice of five single output models with standard output voltages of 3.3, 5, 12, or 24V_DC or two dual output models with ±12 or ±15V_DC. There are two wide input voltage ranges available, the nominal 24V_DC input models accept a range from 9 to 36V_DC while the nominal 48V_DC input models operate with an input range of 18 to 75V_DC. All single output models have a ±10% output adjustment range to help cover a wide variety of application specific voltages.