The MS-4002 has a built-in autosensing headset connector that will determine automatically whether a dynamic or electret headset is connected to the system.

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 a headset for private communication.

Separate controls adjust the voice activation level for the headset microphone and panel microphone inputs.

Use your intercom microphone to talk over a PA system.

Improves visibility in low-light

Red flashing call light, with beep tone if desired.

You can turn off all microphones on a channel to quickly clear the channel.

Connect any line-level audio source for monitoring in the speaker or headset, or for routing to the intercom channel. The program audio to the channel can be set to interrupt while the MS-4002 operator is talking on the channel.

You can connect external powered speakers and then monitor channels 1, 2, 3 and 4.

Add more channels by connecting optional EMS-4001 Expansion Stations. Each EMS-4001 adds four additional powered channels (up to twenty channels).

Instantaneous Auto Reset (IAR), the newest technology in performance and safety, which uses a revolutionary new circuitry that dynamically monitors line fault conditions. Then, when the fault is removed, automatically brings individual power supply channels up.

Can run in unbalanced mode.