ECHO E-DS Desktop or Wall Mount Intercom Stations

  • Handset or speakerphone duplex voice communication
  • Large LCD display with directory scroll
  • Requires only one twisted pair of wires
  • Speed dial and auto conference
  • Caller ID
  • Dedicated paging buttons (All Call & Priority)
  • Availble with gooseneck microphone
  • CE Certified

Federal Signal Models E-DSM (membrane keypad), E-DSMG (membrane keypad with gooseneck mic), are NEMA 1 handset intercom stations that may be used on a desktop or surface / wall mount application to provide speaker phone or private handset duplex two-way voice communication with LCD visual status display. The station’s digital signal processor instantly adjusts speakerphone volume levels to compensate for high ambient noise while providing high-speed connections and clear, crisp voice quality from anywhere in the room. The large, easy-to-read LCD display provides information to identify the name and number of each calling party, provides a name and number directory and an on-line help menu.

The Models E-DSM and E-DSMG Handset Call Stations can call any other station in the system and are capable of full duplex communication using the handset. Since the Digital Central Exchange can process calls simultaneously, there is no dial tone or delay. After keying in the two digits, the call can be connected immediately. The keypad provides tactile and audible feedback for positive activation. The LCD display at each Master station shows the called and calling station ID. A station may be preset to any of four levels of privacy for receiving calls; Non-Private, Semi-Private, Full Privacy, and DND (Do Not Disturb). Volume for both the handset and speaker phone can be adjusted.

The compact console unit is equipped with a handset, panel speaker and electret microphone. A standard 16 button keypad and LCD display with 2 lines of 16 characters is provided. The unit is intended for indoor use.

Voltage24VDC nominal (line driven from ECHO control)

Current Connected
Microphone Type
Microphone Sensitivity

Audio Output
1.0 watts

Housing Material
ABS flame-retardant

LCD Display
2 lines, 16 characters/line

Volume Control
Via Keypad – 30dB in ten steps

Model E-DSM, Membrane keys

Line Attenuation
24dB at 160kb/s maximum

Loop Resistance
170 Ohm maximum

Distance2 km (1.2 miles) maximum

CableOne twisted pair, non-shielded

Cable Termination
Plug-in screw terminal, non-polar

Height10.500 in

Width7.000 in

Depth7.500 in

Net Weight
2.20 lb

Shipping Weight
2.50 lb

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