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Explosion Proof Telephones

Explosion Proof Telephones

model:KNEx8 VoIP
material:SMC(Sheet Molding Compound)

Explosion proof telephone[KNEx8 VoIP]
Explosion proof telephones work as atex equipment basis on standard atex and iecex. The atex explosion proof telephone is rugged and durable. KNTECH design and manufacture the telephone with IECEX tertification and export to 50 countries. Every explosion proof telephone have atex explosion protection ex d iib with exmark.
the explosion proof telephone front view

Explosion proof telephones KNEx8 VoIP

Explosion-proof phone is a waterproof, explosion-proof VoIP phone specially designed for hazardous area communication.The explosion-proof telephone uses heavy metal as the raw material of the outer casing, and its appearance is firm and vandal-proof. It can be used in emergency environments such as petrochemical mining and the like as emergency communication equipment.

What is an intrinsically safe phone?

Intrinsic safety is an abbreviation of “intrinsic safety”. It is a type of explosion-proof electrical equipment that can be used in industrial areas where there are explosive gases, oil platforms, mines and other dangerous areas.
Intrinsically safe power supply, if not protected by other explosion-proof type, can only be installed in non-hazardous areas, but its output (power supply, signal) is intrinsically safe and can be connected to intrinsically safe equipment in hazardous areas, such as telephones ,the explosion proof phone.

What is intrinsically safe equipment?

Intrinsically Safe Type Abbreviation: Intrinsically Safe
Uses: Electrical or equipment explosion-proof category
Interpretation: By controlling the energy level of the device itself, it is lower than the critical condition for igniting the explosive gas under normal working or fault conditions, and does not generate sparks or temperatures lower than the igniting explosive gas, rather than being shielded or blocked by other means.
Related concepts:
1. Intrinsically safe ignition protection
The special provisions for the design and inspection of such electrical equipment are included in the European standard EN 50 020, which are applied to explosives in intrinsically safe ignition protection.
Unlike other methods, intrinsically safe ignition protection involves not only a single device, but also the entire intrinsically safe circuit. If an explosive environment is not ignited by a spark or thermal effect in a circuit, the circuit is said to be an intrinsic type circuit.
In intrinsically safe equipment, appropriate measures must be taken to ensure that energy is limited to a small extent without igniting an explosive environment (including failures). All circuits in intrinsically safe equipment are designed in their own form. These devices are allowed to be used directly in the corresponding hazardous area depending on their explosion-proof rating. Auxiliary electrical equipment includes both intrinsically safe circuits and non-intrinsically safe circuits. They are usually used in safe places, but the cables enter dangerous places. Therefore, the auxiliary electrical equipment must also comply with the above-mentioned explosion-proof grade, that is, an auxiliary electrical equipment connected to the sensor or actuator in zone 0, must be an explosion-proof class 1 device.

Rugged voip explosion-proof phone in hazardous area

The KNEX-8 intrinsically safe phone is designed for use in nuclear power plants, chemical, petroleum, natural gas and other hazardous areas to provide intrinsically safe communications equipment. These phones are suitable for use in fires where the environment is filled with flammable gases, steam, dust, flammable vaporized liquids, or in an environment filled with flammable fibers in the air. KNEX-8 In these dangerous environments, normal work will not be the source of the explosion. Our intrinsically safe phone KNEX-8, cast in a metal case, has a waterproof rating of up to ip67 and is dust and drop resistant.


KNEX-8 is certified by international IECEx and ATEX, and its safety availability can be fully guaranteed. Its function is very powerful, we use voip communication, you can configure the phone in any pc, the configuration is simple, the call is stable, and the call is free.

Composition of KNEX8 VoIP explosion-proof telephone

The explosion-proof phones independently designed and developed by KNTECH are usually used in paga systems and petrochemical fields. The sound and light alarm and loudspeaker explosion-proof telephones we designed are usually composed of explosion-proof alarm D13 and explosion-proof speaker KNLB-Ex5.


1.Robust aluminium alloy die-cast body, Vandal & tamper-resistanthardware.

2.Waterproof rating IP66 dust proof.

3.Full keypad with memory, dialling 10 groups of numbers stored in the memory.

4.Magnetic reed hook-switch.

5.Heavy Duty handset with hearing Aid compatible receiver, Noise canceling microphone.

6.Handset with industrial strong curly cord .

7.Stainless Steel keypad keep waterproof and dusty proof.

8.With externalsafety ring indicator D20 with 80 0.5W and LED 5Vd.c./0.75W: with built-in amplifiermodule support external explosion proof horn 8 Ohm 30W.

9.Door cover: orient automatically and good self - closing, convenient for use.

10.Temperature range from -20 degree to +55 degree.

11.Support echo cancellation.

12.Powder coated in UV stabilized polyester finish.

13.Application: Hazardousdust andgas atmospheres,petrochemical industry,Tunnel,metro, railway, LRT,speedway, marine, ship,offshore, mine, power plant, bridge etc.


explosion telephone line

a : AC power cord (option : 3-core wire)
b : Network cable above cat 5
c : Headset and D20 ringtone and LED DC5V/0.75W and explosion proof horn connection cable(option:8-core wire)


Connect the IP machine to the company's IP telephony network system. Before connecting to the network, check whether the network system is working properly.Direct network connection - In this way, you need at least one Ethernet port in your work place.Connect the LAN port to the Ethernet port of your workspace using the Ethernet cable on the back of the phone.

telephone in internet


pick up the Handset, press the keyboard storage key+address key(digital 0 --- 9)+phone number+storage key, and then hang up.

ex telephone


explosion proof telephone design
explosion proof telephone wall mounted

==>>>> Product Specification

Telephone Specification

Types of protection: II 2G Ex db ib IIBT5 Gb -20℃ to 55℃
VoIP SIP2.0 telephone DTMF dialing MTBF:100000hours
Call Control Signaling:VOIP SIP Info(DTMF), RFC 2833(DTMF)
With built-in amplifier and with external speaker 5-30W for your option
With flash light Power supply: AC220V Or AC110V (option)
Auxiliary Contacts:1 Aux Output, dry contact
Contact Ratings. Load: Resistive load
Rated load:0.3 A at 125 VAC; 1 A at 30 VDC
Rated carry current:1A
Max.switching voltage:125 VAC,30VDC
Max.switching current:1A
Sound level of ringing:over 100dB(A).at 50cm distance.
speed dialing keypad:Super strong function is available for dialing 3 groups of numbers stored in the memory
Audio Codes:G.711, G.722, G.729
Network:10/100 BaseTX Ethernet, RJ45 connectors, Cat5e or better
IP Protocols:IPV4, UDP, DHCP, SIP
LAN Protocols:Power over Ethernet(PoE,802.3af), WLAN(IEEE 802.3af), Network Access
Control(IEEE 802.1x)HTTP,HTTPS,SIP2.0
Programming:Non-volatile flash memory programming and configuration through Web GUI
Management and Operation:DHCP and static IP, remote automatic software upgrade, centralized monitoring.
Echo cancellation code:G.167/G.168
Housing: construction robust aluminium alley die-cast body
Unit size: 278X349X161MM
Weight: 10.65kg(not include speaker and light)
Environment conditions:
Ambient temperature: -20℃ to 55℃.Relative humidity:10%~95%Atmospheric
pressure: 86~106Kpa Circumstance noise:less than 60dB(A) Degree of protection: IP66

explosion proof telephone card

==>>>>Telephone System

Nuclear power plant communication scheduling

Explosion-proof telephones are used in nuclear power plants and are suitable for use in nuclear power reactor areas as emergency communication equipment.

the explosion proof telephone in the chemical industry telephone system

ex telephone

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==>>>>Product Application
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==>>>>Product Detailed Pictures

Explosion proof telephone more detail

the explosion proof telephone front viewthe explosion proof telephone front view
the explosion proof telephone and telephone box the explosion proof telephone side view
the explosion proof telephone close the door viewexplosion proof front

==>>>>Product Video