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Elk Amplified 2-Way Listen-In Interface


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Amplified 2-Way Listen-In Interface

The Elk Audio Amplifier Module with Two-Way Listen-In Capability (ELK-M1TWA) is an accessory for the ELK-M1 and ELKM1EZ8 controls. It provides 3 zones of amplified speaker outputs with adjustable volume, along with 3 zones of microphone inputs. The M1TWA can be used to add two way listen-in to the M1 Control or to just add amplified speakers at keypads and other locations in a building.

Each of the 3 amplified speaker zones can drive a maximum combined impedance range of ~4 to 32 Ohms, permitting multiple speakers to be connected. Each zone includes a mute option that is triggered via an output from the control. The 3 microphone zones can handle up to 4 individual microphones each.

Two way listen-in operation is programmed and operated from the control and includes the ability to select individual mic zones for listening or to select "all" microphone zones. While multiple M1TWA units may be daisy chained together to increase the total number of amplified speakers and microphones, the max. number of zones will always be 3.

  • 3 Amplified Speaker Zones
  • Adjustable Speaker Volume Control by Zone
  • Selectable Mute by Zone
  • 3 Microphone Input Zones (up to 4 mics per zone)
  • Selectable Mic Listen by Zone or Select ALL
  • Interfaces to ELK-M1 or ELK-M1EZ8 Controls

Experience The Most Powerful Security Control

The M1 Gold and the new M1EZ8 offer a rock solid security foundation with the most imaginative automation functionality available. Key features common to both systems include the versatile keypad, flash memory firmware, fast PC programming, and ease of installation. Both systems offer the flexibility to integrate with industry standard systems and components for easy upgrades and system expansion.


  • Manufacturer Part #: ELK-M1TWA
  • Output Impedance Range: ~4 to 32 Ohms per SPKR Output Multiple speakers on any single output must be parallel or serial connected to maintain rated impedance
  • Amplifier Rating: 1/2 Watt per Speaker Output
  • Microphone Inputs: Up to 4 Mics per input. Compatible with: ELK-M1TWM, ELK-M1TWS
  • Operating Voltage: 9 to 14 Volts D.C.
  • Current Draw: 15mA nominal, 1000mA (1 Amp) maximum
  • Microphone Current Draw. 5mA each
  • Housing Dimensions: 4.25" x 6.375" x 2.125"
  • Circuit Board Dimensions: 2.25" x 3.95"