Patent ID: 7778043

Claim:
A flush mounted assembly for housing an electronic or electro-mechanical module which detects and responds to abnormal ambient air conditions, said assembly including: a base mounted in an opening in a structural member such as a wall, partition or ceiling, said base including a peripheral side wall defining a shallow cavity with an open outer face and an inner wall, a laterally outwardly projecting flange extending from said peripheral side wall of said base for flush engagement with said structural member, said shallow cavity of said base dimensioned to receive said module, a closure plate for said outer face of said base cavity, said closure plate having a periphery dimensioned to close said open outer face of said base cavity leaving only a narrow gap between said closure plate periphery and said base periphery wall to allow ambient air to enter such shallow cavity of said base and interact with said module, a module located in said base, means to support said module in said base, and releasably engageable members to attach said closure plate to said base.