Housing for security alarm - with micro-contacts between cover and wall socket actuating alarm if cover is removed,申请号FR19770012931-传众专利搜索

Housing for security alarm - with micro-contacts between cover and wall socket actuating alarm if cover is removed

申请公布号：FR2389186(A2)

申请号：FR19770012931

申请日期：1977.04.29

申请公布日期：1978.11.24

申请人：

LIOU TCHEN SAN RENE

分类号：G08B3/00;G08B29/04;(IPC1-7):08B29/00;10K9/18;08B3/00

主分类号：G08B3/00

摘要：<p>The housing, for the alarm source coupled to a security system, has a removable external cover, made of perforated sheet metal, which completely encloses the wall socket forming the other part of the housing. The wall socket has its own protection plates around the sides and a number of springs are fixed to the outer surface of these protection plates so as to be compressed when the cover is fitted over the wall socket. Movement of the latter springs actuates micro-contacts for an alarm, to prevent illegal removal of the cover. A seal between the cover and the socket may also incorporate alarm contacts.</p>