Ex_headset03

Dorland Intrinsically Safe Noise Cancelling Earphones Ex_headset03

Ex-Marking：Ex ib IIC T5 Gb

Certification No.：CCRI 19.2279

Mode of wearing：Ear-in

Plug：3.5mm Jack

Product Introduction
Technical Parameters
Product Certificate
Product Report

Developed by Beijing Dorland System Control Technology Co. Ltd., the Safe Noise Cancelling Earphones Ex_headset03 adopts advanced technology with intrinsically safe circuit,. The earphone adopts ear canal pickup technology (non-bone conduction technology), which integrates the microphone and the speaker and is built in the earplug. When the call is made, the microphone only picks up the voice from the ear canal, and the noise is blocked by the head and does not enter the ear canal, so that the microphone Working with the speaker in a quiet ear canal, this technology has won the national invention patent and created a new in-ear passive two-way noise canceling headphone product.

In addition, the headset has a 3.5mm audio cable port that can be plugged into an external device for answering calls. Explosion-proof certificate is Ex ib IIC T5 Gb，Zone1 / Div.1. The model is especially suitably used in dangerous environment such as petroleum, chemical, pharmaceutical, oil depot, oil & gas, tank farm as well as the dangerous sites with combustible and explosive gas.

It is convenient for users’ timely production dispatching and online communication.

Ex-Marking：

Ex ib IIC T5 Gb
Certification No.：

CCRI 19.2279
Microphones：

Sensitivity：-47±3dB 、Maximum input sound pressure：120dB 、 Impedance：2.2KΩ 、Decompression characteristic：-3dB
Trumpets：

Sensitivity：103dB、 Impedance：46Ω 、 Distortion：＜5% 、Maximum output peak：118dB 、Range of influence：20-22KHz
Headphone Jack：

3.5mm Plug in
Weight：

15g
Line length：

120cm
Dimensions：

18*12*4cm
Mode of wearing：

In-ear type (suitable earplugs can be selected according to the ear canal size of different people)