Barrier control system with auxiliary power supply and auxiliary power supply for barrier control system
作者： Philip Y.W. Tsui , Gallen K.L. Tsui
DOI:
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摘要: The invention relates generally to the field of barrier control systems and in particular systems, such as a garage door opener, with auxiliary power supply for systems. A system, an system are described. includes backup battery light source that is operable on DC power. sensor detect whether motor powered by battery, switches upon detecting being
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