KNEX08-VoIP ATEX Broadcasting Phone


KNEX-08 is a VoIP SIP ATEX certifed, mains powered industrial IP66 weatherproof telephone with loud speaker and flashing beacon light, made from die cast alloy, the IP66 rating specifically addresses harsh environments.

Designed for use for both internally and external in hazardous combustible environments where risk from explosive atmospheres are common. Also for use in use in dusty, wet, corrosive, noisy, harsh environments.

String and non-corrosive, made from aluminium die-cast, the weatherproof telephone is both rugged and durable. Special sealing design ensures complete waterproof and grade up to IP66 weatherproof, dust-proof , moisture-resistant and corrosion resistance, even when the door enclosure is open.

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ATEX SIP Weatherproof Telephones, IP66 rated for dangerous hazardous environments...

KNTech ATEX certified broadcasting telephones are used industry wide where there is a requirement for protection against explosive and hazardous atmospheres. The KNEX08-VoIP ATEX broadcasting phone is IP66 weatherproof and can be installed internally or externally, the exceptional IP66 rating ensures a high level of protection against water and dust ingress when exposed to uncompromising environments.  

Manufactured from robust aluminium alloy die-cast body, the advantage being a high impact, high ductility and good level of corrosion resistance as a result the telephone is ideal for installations within industrial environments ranging from -20 to +55 degree temperatures.

Heavy duty features throughout

KNEX08 Atex Certified Telephone FeaturesThe heavy duty handset is supplied with hearing aid compatible receiver and noise cancelling microphone this to ensure that communications are of the highest quality, even within the most difficult of environments. The handset also has a magnetic reed hook-switch with no moving parts and is supplied with a choice of either a industrial curly plastic cord or extra tough stainless cord. 

Weatherproof, watertight and dust proof… 

KNEX08-VoIP ATEX broadcasting phone watertight door enclosure consists of a spring driven spiral metal hinge and (optional) door lock mechanism ensures that the telephone is kept clean and safe. The door provides room for pictograms or graphics, however, the telephone’s IP66 rating is retained, even when the door is open. 

KNSP Series IP66 EX telephone maintains 24/7 emergency and service communications where reliability is essential.

EX Protection rating: II 2G Ex db ib IIB T5 Gb

Designed for both emergency and service application, widely used in many industries such as; Industry factories, tunnels and power plants or where industry requires heavy duty and reliable communications.

For use in extreme temperature environments, fully functional between -20 ~ +55 degrees. Fully operational in relative humanity :10%~95%  and also in high atmospheric pressures: 86~106 Kpa. MTBF: 100,000 hours. 

Features designed specifically for the needs of the user

When a emergency situation or disaster occurs and people’s lives are at risk, it is vitally important emergency telephones are fully functional, ready to communicate loud and clear. KNEX Series telephones tick all the boxes.

The externally mounted optical beacon lamp and loudspeaker (15-30W) provides remote broadcasting features (options based on requirements) and provides a high level of visual and loud alert to the telephone call. See our EX horns and speakers for more broadcasting details.

KNEX08-VoIP ATEX broadcasting phone has a large keypad inclusive of durable waterproof and dusty proof metal buttons ensures convenience for the user, particularly when wearing protective gloves. The keypad also has additional call function with 3 button’s programmable for speed-dial.

Supplied Inclusive of a hearing Aid compatible receiver, an essential requirement for hard of hearing users. The noise cancelling microphone prevents interference from background noise, as is frequently a problem, this includes heavy industrial, highways and high wind locations. Featuring a loud ringer  + 100dB(A) @ 50cm,

Remote Status Monitoring

Integrity wiring enables the control room to check if the telephones are full operational (PABX have this feature available, we can provide this function), this is a simple to use systems. KNSP dispatch and management system phones are also available to ensure complete coordination from control rooms.

Version Availability

KNEX06 Analogue Explosion Proof Telephone with analogue line connection, powered by AC mains power supply 

KNEX05 Analogue Explosion Proof Telephone with analogue line connection powered by analogue line 24V-48V dc

KNEX07 SIP Explosion Proof Telephone, powered PoE, (110V or 220V optionally on demand)

KNEX08 SIP Explosion Proof Telephone with Loudspeaker and Flash Light. Powered AC Mains, (110V or 220V)


EN 60529  – IP66 watertight and dust ingress rating –  

CE – This mark indicates compliance with the: Radio and Telecommunications Terminal Equipment Directive 2004/108/EC

Conforms to IEC IP66 CE

EN IEC 60079-0:2018, EN 60079-1:2014, EN 60079-11:2012 – Compliance with essential health and safety requirements

EX Protection rating: II 2G Ex db ib IIB T5 Gb


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Product Categories

SPECIFICATION – VoIP SIP (Model KN08) Mains AC Powered

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 15-30W
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



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 -20 degree to +55 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.

Cable Entry Diagram

KNEX08 SIP ATEX phone wiring details

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)

standard dimensions of atex telephone with door

Unit size:Unit size: 278 X 349 X 161cm
Weight: 10.65kg


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Additional information

Weight 11 kg
Dimensions 45 × 30 × 20 cm


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