Use the built-in speaker for listening and add an optional MCP-90 series Gooseneck Panel Microphone for talkback. You can also turn off the speaker volume, and plug in headsets for private communication.
Voice Activated Microphone (VOX)
Separate controls adjust the voice activation level for the headset microphone and panel microphone inputs.
Public Address (PA) Output, with PA key
Use your intercom microphone to talk over a PA system.
Improves visibility in low-light
Binaural (Stereo) Listening with External Powered Speakers
You can connect external powered speakers and then monitor channel 1 and 2 as separate right and left audio.