Programmable automatic door opening and closing system for use in hen houses, for opening and shutting shelter doors in the morning and evening so that hens can leave the hen house without personnel having to manually open doors

摘要

Programmable automatic device for opening and shutting accesses (1) to shelters in a hen house. The device comprises a door (2) and a drive (3) for opening and closing of the door. A clock device is provided as well as a programmer that controls opening and closing of the door at given times.