Explosion-proof industrial hazardous area telephone with keypad and sturdy metal enclosure for safety in hazardous environments.

Stainless steel explosion-proof wall-mounted telephone with keypad and handset for industrial safety environments.

Stainless steel explosion proof wall-mounted telephone with keypad and handset, designed for hazardous environments.

Analog Explosion Proof Industrial Hazardous Area Telephone 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

Certified Explosion-Proof & Waterproof (Ex d IIC T6 Gb | IP66)

Built for Zone 1 & 2 hazardous gas areas. Fully sealed against heavy rain, high humidity, and industrial dust for reliable all-weather operation.

Corrosion-Resistant Stainless Steel Housing

Available in 304 stainless steel for standard chemical/mining plants, or marine-grade 316 stainless steel for coastal, salt-spray, and offshore environments.

Backlit Metal Keypad & One-Touch Dialing

Durable metal keys with bright blue backlighting ensure visibility in low-light dark tunnels and factories. Includes 3 customizable shortcut keys (D1/D2/D3) for instant emergency dispatch.

Heavy-Duty Industrial Construction

Features an impact-resistant, oil-proof handset and a high-tensile anti-pull spiral cord to prevent wire damage. Pre-equipped with standard explosion-proof cable glands for seamless wiring.

Wall-Mounted Installation & OEM Customization

Compact, wall-ready design requires no extra cabinet space, cutting deployment costs. Supports laser-engraved branding and tailored keypad configurations for specialized projects.

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.