Noise Cancelling Earphone, Noise Cancelling Headphone

PKI 2485 / PKI 2490Print

In order to eliminate loud environmental sounds, such as street noise, etc. when receiving acoustic signals by a receiver, a directional microphone or a laser eavesdropping device you need this noise cancelling earphone and headphone. The miniature microphone of the earphone/ headphone captures and eliminates the background noise so that a clear understanding without any disturbance is possible.

Specifications

  • Sensitivity: 110 dB S.P.L. at 1 KHz
  • Impedance: 32 Ohm
  • Frequency range: 20 Hz – 20 KHz
  • Maximum input power: PKI 2485 – 10 mW, PKI 2490 – 100 mW
  • Driver unit: PKI 2485 -13 mm, PKI 2490 – 40 mm
  • Active noise reduction level: 40-1500 Hz – 10 dB at 300 Hz
  • Cable length: 1,5 m
  • Plug: 3,5 mm gold plated
  • Power supply by: 1,5 V battery type AAA