Green C & C Tech dual output GH001A Rev 4.0 inverter. 12V input. Alternate for Frontek FIF1521-31B, P1521E03 Ver 1 and GH001HB. The difference between the GH001A and GH001HB inverter is the output current only. The form, fit and function is the same. GH001A has 80mA output current. GH001HB has 75mA output current. MP40, MP50, M8003-64004, M8003A-64003A, M8004A, 453563499021.