Multifunctional/modular smoke alarm device having particular housing features

摘要

A smoke detector device featuring a base for mounting to a ceiling, wall, or fixture. The base has three grooves disposed in its outer surface. Rings can wrap around each groove on the base. Each ring has at least two modules with an inner chamber and a door, wherein the inner chamber of each module can hold an item. The base can move between an expanded position wherein the three grooves are exposed and a collapsed position wherein only one groove is exposed. Flanges and set screws can secure the base in the expanded position.