12volt dth Power Supply Circuit Board for D2H DTH Set Top Box Satellite Receiver Changeable SMPS PCB.this is latest smps board which is better then old type smps which was work on direct ac. but in this circuit ac not required. only 12 volt and 1.5 amp adopter will perfectly work on this supply. this supply is on IC based. by using of ic no chance of any voltage drop and signal week problem . if you install it in your dth set top box one time then your dth settop box life will be very long. this is advance version of dth supply.