Dynamic noise-canceling microphone to reduce the background noise effectively and to enhance communication quality, in the 115dB environment, the two persons still can achieve a clear call (in accordance with the national test certificate issued by the authority)

On board DC power indicator for easy maintenance

Modularized components for easy installation and maintenance.

Key parameter:

Input level&output level:1.5Vrms

AGC：58dB normal ,(40-68dB adjustable)

Frequency response：250-7500Hz(±1.5dB)

Noise-canceling performance：run in the115dB environment condition

Transmitter:10Ω,dynamical anti-noise

Headphone:130Ω,dynamical anti-noise

Degree of distortion:1% (1000Hz)

Adjustable item:Gain and volume of transmitter,volume of loudspeaker, sidetone

Power supply：AC220V,50HZ,

Zero signal power：2.5W

Max. signal power：35W

Amplifier power：nom.25W, Max.30W

Phone cable length：30CM, Max.1.5M