Analog Explosion Proof Telephone for Industrial Hazardous Area JWBT835

The JWBT835 Analog Explosion-Proof Telephone delivers reliable, 24/7 POTS communication for legacy systems and hazardous environments. Featuring a stainless steel housing, IP66 rating, backlit keypad with 3 shortcut keys, and ATEX/IECEx certifications, it seamlessly integrates with conventional PBX hosts. Ideal for refineries, mines, and plant retrofits.

Widely used in：
MARINE ENVIRONMENT
HIGHWAY SHOULDER
SUBWAY STATION
TUNNEL
UNDERGROUND FACILITY
RAILWAY PLATFORM
MINING SITE
OTHERS
KEY FEATURES

Joiwo’s Analog Explosion Proof Telephone Solutions

Built for hazardous industrial sites, this Analog Explosion Proof Telephone combines certified explosion-proof protection, reliable weather sealing, and a heavy-duty stainless steel structure. It is designed for fast emergency calling and stable communication in harsh environments such as chemical plants, mining areas, coastal facilities, and offshore platforms.

  • Certified explosion-proof & waterproof: Rated Ex d IIC T6 Gb and IP66, suitable for Zone 1 / Zone 2 hazardous gas areas; sealed design resists heavy rain, humidity, and industrial dust.
  • Corrosion-resistant stainless steel housing: Optional 304 stainless steel for standard industrial sites; optional 316 marine-grade stainless steel for coastal, salt-spray, and offshore environments.
  • Backlit metal keypad + one-touch dialing: Metal keys with bright blue backlighting for low-light areas; 3 programmable shortcut keys (D1/D2/D3) for instant calls to control room or emergency dispatch.
  • Heavy-duty industrial construction: Impact-resistant, oil-proof handset and high-tensile anti-pull spiral cord to reduce damage from pulling and frequent handling; standard explosion-proof cable glands pre-installed for secure wiring.
  • Wall-mounted installation & OEM customization: Compact wall-mount design without an extra cabinet to save space and cost; supports laser-engraved branding and custom keypad/shortcut key configurations for project needs.
Item Technical data
Explosion-Proof Mark Ex d ib IIC T6 Gb/EX tD A21 IP66 T80℃
Voltage Phone Line Powered
Standby Work Current ≤0.2A
Frequency Response 250～3000 Hz
Amplified Output Power 10～25W
Ringer Volume 110dB(A) at 1m distance
Corrosion Grade WF2
Ambient Temperature -40～+60℃
Atmospheric Pressure 80～110KPa
Relative Humidity ≤95%
Lead Hole 3-G3/4”
Installation Wall-mounted
DIMENSIONS

PACKAGE

Packaged in high-density, eco-friendly corrugated box with custom-molded shock-absorbing EPE foam inserts, providing complete drop and impact protection during transit. All packaging materials are fully compliant with international packaging regulation. Clearly labeled with standard handling symbols, product specifications, and safety markings.

Proof Heavy Duty Telephone in Packaging for Industrial Use.
FREQUENTLY ASKED QUESTIONS
Q1: What is the difference between analog version and SIP IP version?
This analog version adopts traditional POTS line communication, compatible with old PBX systems, no network configuration needed, more stable and suitable for old factory renovation. The SIP IP version is for new modern network dispatch systems with POE power supply. Please select according to your on-site system type.
Q2: Do you provide ATEX/IECEx certificates for customs clearance and tender?
Yes, complete formal certification documents, test reports and technical datasheets are available to support your project bidding and customs clearance.
Q3: Is professional installation required?
No complicated installation required. Just complete wall fixing and telephone line connection, plug and play, simple and fast for on-site construction.
Q4: Can the shortcut keys be customized?
Yes. We can program the D1/D2/D3 shortcut keys according to your project needs to realize one-key call to designated numbers.
Specially applicable for projects with traditional analog PBX system & old equipment renovation:
  • Petrochemical plants, oil refineries, natural gas processing plants
  • Inland chemical factories, pharmaceutical factories with flammable and explosive materials
  • Coal mines, metal mines, underground tunnel projects
  • Offshore platform peripheral auxiliary areas, coastal industrial terminals
  • Old industrial park renovation, EPC engineering supporting projects
  • Hazardous area workshops requiring stable emergency analog communication

Joiwo provides integrated, end-to-end communication systems built for harsh and hazardous industrial sites. We connect explosion-proof PA telephones, field terminals, and IP-PBX networks directly to your central control room—ensuring clear, secure operations in Oil & Gas, Chemical, Offshore, and Mining facilities.

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