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Explosion proof telephones

Explosion proof telephones

model:KNEX8 VoIP
material:SMC(Sheet Molding Compound)

Explosion proof telephones
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 telephones description

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.


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

2. Waterproof rating IP66 dust proof. 3. Full keypad with memory, 

3 button programmable telephone. 

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. The loudspeaker and flash light

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

10. Temperature range from -40 degree to +70 degree. 

11. Support echo cancellation. 

12. Powder coated in UV stabilized polyester finish. 

13. Application: Hazardous dust and gas atmospheres, petrochemical industry,Tunnel, metro, railway, LRT, speedway, marine, ship,offshore, mine, power plant, bridge etc.


explosion proof telephone design

==>>>> Product Specification

Types of protection: II 2G Ex db ib IIB T4 Gb -40℃ to 60℃

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 15-30W

With flash light

Power supply: AC220V Power supply

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 120dB(A). 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, TCP, UDP, DHCP, SIP

LAN Protocols:Power over Ethernet(PoE,802.3af), WLAN(IEEE 802.3af), Network Access

Control(IEEE 802.1x),STP(IEEE 802.1d), RSTP(IEEE 802.1d-2004)

Programming:Non-volatile flash memory programming and configuration through Web


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: -40℃ to 70℃. Relative humidity:10%~95%

Atmospheric pressure: 86~106Kpa Circumstance noise:less than 60dB(A)

Degree of protection: IP66 according to EN60529

Impact protection: IK 09 according to EN50102

the explosion telephone certificate

==>>>>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

==>>>>Product Application

Explosion proof telephone application place

explosion proof telephone application nuclear power plant explosion proof telephone application outdoor explosion proof telephone application chemical industry explosion proof telephone use in the chemical industry
explosion proof telephone application place

==>>>>Product Detailed Pictures

Explosion proof telephone more detail

the explosion proof telephone front view the 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 view the explosion proof telephone left view

==>>>>Product Video
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