Compact built-in pressure chamber loudspeaker, ideal for voice announcements and alarms indoors and outdoors, e.g. in production facilities, emergency call boxes, etc. Unlike pressure chamber loudspeakers, it is not equipped with a driver, but with a 66 mm cone broadband loudspeaker. This results in a larger bandwidth, which is why the transmitted speech sounds very natural. The loudspeaker is screwed onto the four holes in the flange. The cable entry is via an M12 screw connection.
