4 power wiring, 5 grounding and surge suppression, Telephone line surge suppressor – DoorKing 1812 Classic User Manual

Page 15: Low voltage surge suppressor, Some acceptable ground sources, Wire size max distance, Output 24 v ac 20 v a, Phone company transformer

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4 power wiring, 5 grounding and surge suppression, Telephone line surge suppressor | Low voltage surge suppressor, Some acceptable ground sources, Wire size max distance, Output 24 v ac 20 v a, Phone company transformer | DoorKing 1812 Classic User Manual | Page 15 / 46