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Two Way Listen-In Microphone 3 Zones Connects 12 Mics Ness

BRAND: Ness
SKU: 101-219
$74.90 List price: $99.90
+ −
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Ness listen-in microphone features two way audio, support for 3 zones and connection of 12 mics. Ideal for alarm audio verification.

Alternatively Known As: Ness M1TWI Listen-In Interface, Two-Way Audio Verification Interface, Alarm Listen-In Microphone Module

Technical Specifications
  • Compatibility: Ness M1 control panels
  • Audio Function: Two-way voice verification and listen-in
  • Microphone Capacity: Up to 12 microphones
  • Zone Capacity: 3 separate microphone zones
  • Microphones Per Zone: Up to 4
  • Operating Voltage: 12 V DC
  • Interface Current Draw: 10 mA
  • Microphone Current Draw: 5 mA per microphone
  • Housing Dimensions: 111 x 76 x 28.5 mm
  • Dimensions (H x L x W): 28.5mm x 111mm x 76mm
  • Weight: 0.1 kg
Key Features
  • Adds two-way listen-in functionality to Ness M1 control panels
  • Supports three separately selectable microphone zones
  • Allows up to four microphones per zone
  • Supports a total of up to 12 connected microphones
  • Enables central station alarm audio verification
  • Provides remote audio monitoring through the alarm panel telephone interface
  • Microphone power and switching are managed by the interface
Professional Installation Requirements
  • Installation should be performed by a suitably qualified security or alarm technician. The interface requires connection to a compatible Ness M1 control panel, microphone wiring and system programming.
Applications
  • Alarm audio verification
  • Central station two-way listen-in
  • Remote monitoring of residential and commercial premises
  • Audio monitoring for care, elderly assistance and security applications
Standards & Compliance
  • Relevant alarm system installation standard: AS/NZS 2201.1 for intruder alarm systems at the client premises; product-specific compliance is not separately stated by Ness.
Environmental Benefits
  • Low-power operation with approximately 10 mA interface current draw
  • Ness publishes a RoHS certificate of compliance for its products
  • Small electronic module design helps minimise material use and installation waste
Warranty Information

Ness manufactured or supplied products are covered by a 3-year warranty from the date of purchase, subject to Ness warranty terms and conditions.

Available Now

Available through Ness Corporation and authorised Australian security equipment distributors.

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