The power supply will either have 2 screw terminals (+, -) or 3 terminals (+, -, ground). ![]() Using 18 AWG or better wire, measure the length of wire needed to connect the power supply at the power outlet to the power terminals on the circuit board.įirst connect the wires to the power supply, then the wires to the alarm panel, and then finally plug in the power supply to the electrical outlet. Connect the ground first (black), and then the power (red). The wire colors will be red & black which match perfectly the red and black terminals on the battery itself. Buying the recommended BD7-12 battery or purchasing the battery, power supply, and main board in a kit is easier. In this case, they should both be 12 volt 7 amp-hours. First, verify that the power requirements of the circuit board match those of the battery. ![]() ![]() For this alarm system, the wires for the battery come directly out of the side of circuit board.
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