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3 tone open numbers, 4 input switch – DoorKing PC Compatible Multi-Door Access Controller 1838 User Manual

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3 tone open numbers, 4 input switch | DoorKing PC Compatible Multi-Door Access Controller 1838 User Manual | Page 28 / 49 3 tone open numbers, 4 input switch | DoorKing PC Compatible Multi-Door Access Controller 1838 User Manual | Page 28 / 49