Special Features:

Capable of providing 2 way communication with up to 10 other intercommunications stations (lsw-518d/sic) or up to 20 other units (ls519e/sic); hands free or press-to-talk; front panel receptacle for m-132/sic microphone or h-186a/u; solid state electronic switching keypad; mount on bulkhead, in a panel, in a desk suitable for shipboard install, in protected areas; watertight enclosure (p/n 61690-220); enclosure is aluminum and dripproof

Properties:

An item which may provide two-way amplified voice communications when connected to one or more like stations directly or via intermediate control equipment; includes loudspeaker (which may be used as a loudspeaker or microphone), signalling devices, amplifier and station selector switches. May include separate microphone, earphone, handset or headset. See also, telephone connecting station.