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ACCESSORIES > Noise Sensing Microphone


DNM Series

Product Number: DNM-485 / DNM-ENET / DNM2-ETH


The DNM is a digital noise sensing microphone. It features high sensitivity and omni-directional pick up pattern. The DNM offers precise detection of the background noise and automatically adjusts the output level of loudspeaker to achieve the optimal intelligibility of sound.

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Description

  • The DNM is a digital noise sensing microphone. It features high sensitivity and omni-directional pick up pattern.
  • The DNM offers precise detection of the background noise and automatically adjusts the output level of loudspeaker to achieve the optimal intelligibility of sound.
►DNM-485: RS485 type
►DNM-ENET / DNM2-ETH: Ethernet type

Specifications

Electrical

  • DNM-485: 18~30 VDC
  • DNM-ENET/DNM2-ETH: Powered by PoE (Conform IEEE 802.3af)

Audio Characteristics

  • Capsule type: Electret condenser
  • Capsule directivity: Omni-directional
  • Ambient noise measurement range: 55 dBA ~ 88 dBA
  • Deviation of mic pickup directivity: 0 ~ -1.5 dB (±30°), 0 ~ -3.7 dB (±45°), 0 ~ -5.3 dB (±90°)

Network

  • Connection type: 
    • DNM-485: 5.08 mm euroblock terminal (4 pin)
    • DNM-ENET/DNM2-ETH: RJ45 for CAT5/6 cable via Ethernet port
  • Max. distance between IDA8C processor and DNM-485 units
    • 100m without connecting to 24VDC power supply
    • 1000m by connecting to 24VDC power supply on PPM JB
  • Max. distance between IDA8C processor (DNM-ENET/DNM2-ETH): CAT5/6 cable with RJ45 connector via Ethernet port (max. 100M)
  • Max. DNM-485 units per PDC port and per IDA8C processor: 8 units per PDC port / 32 units per IDA8C processor
  • Max. DNM-ENET/DNM2-ETH units per PDC port and per IDA8 Cprocessor: 8 units on each IDA8 local network

Mechanical

  • Dimension
    • Diameter: 105 mm (4.1 inch)
    • Height: 130 mm (5.1 inch)
  • Weight: 0.13 kg (0.28 lbs)

Environmental

  • Operating temperature: -5 ºC ~ +55 ºC (+23 ºF ~ +131 ºF)
  • Storage temperature: -40 ºC ~ +70 ºC (-40 ºF ~ +158 ºF)
  • Relative humidity: 20 % to 95 %
  • Air pressure: 600 to 1100 hPa
  • Heat dissipation: 20 BTU/hr

Applications

Contact Us

ATEÏS Middle East – Dubai (HQ)

 

LIU-1 No.10 & 11 Dubai Silicon Oasis P.O. Box 293640 Dubai U.A.E
T: +971 (4) 3262730 F: +971 (4) 3262731
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ATEÏS Middle East – India

 

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Thane Belapur Road, MIDC, Opp Turbhe Railway Station, Turbhe,
Navi Mumbai. Maharashtra, India 40070