DETECTOR ASSEMBLY SUITED TO SMOKE ALARMS

摘要

A detector assembly (10) powered by mains electricity and an elongate backup battery (76) is disclosed. The assembly includes: a ceiling mountable base (10) having a body defining a downwardly opening socket (24); a detector module (20) having a battery support portion (75) for holding the battery (7 6) in a vertical orientation, the module (20) receivable by the socket (24); a quick connection means for mechanically and electrically connecting the modu le (20) to the base (10); and shutter (50) mounted to the base (10). The shutte r (50) prevents operation of the quick connection means when no vertical batte ry (76) is installed within the module (20). The quick connection means compris es co-operable pairs of conductors. The conductor pairs transmit power from the base (10) to the module (20). The pairs of conductors each comprise a stud conductor mounted to the base (10) and a forked conductor mounted to the module (20).