Automatic pet door
作者： Henry E. Solowiej
DOI:
关键词:
摘要: An automatic pet door system is disclosed. The has a rectangular frame mounted between studs of wall defining passage for entry and exit pet. A slidably moves within the lower closed position closing an upper open opening passage. lifted by drive means having motor pulling cable attached to door. energized control in response signal received from magnetic transmitter worn when approaches locking prevents movement upwardly unless moved way means.
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