Casing shell for a fire alarm box has upper and lower parts made as one piece, firmly interlinked and fitted with a cavity inside for connector terminals and detector electronics

摘要

Holes (12) in an upper casing part (1) fasten sensors or optical barriers. Electronic detector components are integrated in the upper casing part. Two apertures (7) for optical display are placed one above the other in a base area, where four countersunk areas (14) with holes (8) fit.