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explosion proof telephone speaker box telephone

Basic Info

Model No.: JWBT858

Product Description

Explosion Proof Telephone Speaker Box Telephone Specifications   1.suit for arduous and hadzardous 
2.ex certificate 


1. Suitable for explosive gas atmospheres Zone 1 and Zone 2

2. Suitable for IIA, IIB explosive atmosphere

3. Applicable to combustible dust Zone 20, Zone 21 and Zone 22

4. Suitable for temperature class T1 ~ T6

5. Widely used in oil exploration, chemical, military, pharmaceutical, oil refining and

 other hazardous environments and depots, offshore oil platform, oil tankers and other places

6. Suitable for high noise places


1. Telephone can be composed of independent communications system

2.Has seven self-conversion channel: pick up the phone when called, the system can automatically 

convert channelAt the same time cut loudspeakers, enter the normal call state;

3.Telephone call a full-function (off-hook call system in all of the phone)

4.After the formation of the call system, each phone is an independent workstation, one of failure 

does not affect the whole system work

5.After the formation of the call system, the product has automatic gain function, speech does 

not vary with the size of the distance length or phone number changes

6. PA speakers sound volume can be adjusted

7.Telephone housing patented design, waterproof, dust-proof, no waterproof cover, beautiful and practical.

8.Telephone within internationally accepted double-sided integrated circuit, having made precise 

number, call clear, stable and so on.

9.Alloy shell, high mechanical strength, strong impact.

10.Shell surface temperature electrostatic spray, anti-static ability, eye-catching colors.

11.Key parts of the handle, the hook, the keyboard by the company's own production, strict quality

 control check, sale and reaction speed




Explosion-proof Mark


Working voltage


Standby work current


Frequency response

250~3000 Hz

PA output power


Defend Grade


Corrosion grade


Ambient temperature


Atmospheric pressure


Relative humidity 


Lead line holes


Machine weight


Installation Wall

Wall Mounted

          Using method :   1. Calling off hook → All Call: press "* #" Start All Call   2. Caller-hook → Paging: number according to the population or the area set to Call   3. Calling off hook → single call: press called the Telephone number set to Call   4. Called to hear the broadcast called off hook → → normal call state   5. "+ / + - / -" Keys on the keyboard are two volume control keys, according to the  size of the site noise levels adjust the speaker volume, "R" key to redial key   6. Number settings: off hook → enter "### 156" hear "ding-dong" → then enter "13" → hang → wait 3 seconds → Off hook → enter "### 159"  hear "BUZZ "→ then enter" XYZ "→ hang up; phone numbers were set to" XYZ "     Product size and contour map         Packaging & Shipping       Company Information    Ningbo Joiwo explosionproof  technology Co., LTD was eastablished in May, 2011. with the shrinkage of pulic telephone market, and with the advantages of our many years’ experience in Public Telephones and industrial telephones, we enter Industrial Telephone field and register Joiwo as our trademark. Wih its strength of researching and developing, producing and providing products, we develope and design all of our items and are applying patents for our new designs. Our products are widely used in manufacturing sites of steel, vessel, petroleum and chemistry etc.. waterproof grade of all of our telephones reaches IP67.      Our division takes ’justice, perseverance, striving, innovation and pragmatic practise’ as our corporate culture, takes ’customer orientation’as our operation principle, takes ’quality is margin’ as our quality policy and takes ’talents are the only competitiveness for entreprise’ as our strategy. Our purpose is to provide high-qulaity products with competitive prices, to create development opportunity for our employees and to develope Meiwo in the industrial telephone field.      We Joiwo belives efforts would be paid off! Superior-quality products and exceptional service help win customers. We are working on them to make Joiwo be the trust-worthy brand in this field.      The meaning of  Joiwo is to bridge the gap of the world. We are willing to create a beautiful future of industrial telecommunication with others in the same trade. We belive the development of a line of business needs the joint effort of all traders in the same line. Only the line of this business developes well, each company has its space to develop.                             If you have any questions, please feel free to contact us !

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Product Categories : Explosion Proof Telephone