This pack holds 2x beautifully fine SR/BR Green gas type wall lamps with appropriate mounting bracket mounting bracket, plus 6 x LEDs for building illumination and both lamp and LED level control circuit boards. These lights require a 12v DC supply to illuminate them. We recommend using the GMC-WM4 plug in transformer as it will supply your circuit with a regulated 12v DC power source. Do Not use a 16v AC supply for these lamps as they will blow.