Special Features:

-high output power for large or noisy area, separate transmit and receive volume controls, variety of subs, or use 8 ohm horn speaker with np-25v cappacitor, power source 110 ~ 125v ac, 50/60hz, sub calls in with tone and led, 15 sec., depress selector and use talk/listen switch, all call selectively to max 5 subs, max 10w transmit (adjustable), 300mw receive (adjustable)

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.