REPLACEMENT OF A AND B BOARDS
1. Locate the wiring diagram. it will help later with connecting wires to the board.
2. Disconnect wires from the board.
3. Unscrew mounting screws. There are three of them per board.
4. Replace the board.
5. Reconnect the wires.
6. Adjust sensitivity.
7. Close the box.
8. Seal the box using silicone and filling all openings and gaps if the box is made out of aluminized material. Rubber sealed box does not need to be sealed.
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