Special Features:

4 channel full-duplex headset station; wall mounted; mount in standard us 2-gang outlet box; electronic switching for talk button; mic-on led indicator

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.