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ETS STW4 4 Zone Listen / Talk Back Monitoring Station W/ Built In Microphone
The ETS STW2 is a stand alone 4 zone, two way, listen and talk back monitoring station. It has terminals for connecting a STW1 and STW1-SE speaker / microphone. Additionally the DVR / recorder in out function permits recording and playback of both sides of conversations.
Furthermore the STW4 has a built in microphone with push to talk function.