The Telex Model 4030 is a portable user station for use with RTS/Telex two-wire or 4010 IFB intercom systems. The Model 4030 is
a listen-only IFB belt pack that can be used to listen to one or two intercom or program channels.
Powered externally, via the intercom system power supply on channel one.
Power ON indicator
Headset/Earset jack set for a wide range of operations.
Monaural phone jack for intercom channel one.