发明名称 Alarm unit
摘要 An alarm unit is provided for attachment to a wall surface. The alarm unit includes a back plate and a plastic outer cover. The cover is attached to the back plate by a hinge. The hinge has an orientation such that when the alarm unit is attached to a wall surface, hinged movement of the cover away from the back plate is assisted by gravity. The cover may be retained in position against the back plate by one or more screws which may be provided with a sliding cover.
申请公布号 GB0606792(D0) 申请公布日期 2006.05.10
申请号 GB20060006792 申请日期 2006.04.03
申请人 ELMDENE INTERNATIONAL LIMITED 发明人
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