How often should the explosion-proof radio be re-tested?

It should be promptly returned to the manufacturer after two years for re-testing to determine explosion levels.

Can I disassemble the device in hazardous environments?

No, do not replace batteries or accessories in hazardous environments as spark generation may cause danger or fire.

What is the maximum working current?

The maximum working current is less than 650 Ma.

Explosion Proof Walkie Talkie (Interphone) Coal Mine Telephone Mining Phone

Name: Explosion Proof Walkie Talkie (Interphone) Coal Mine Telephone Mining Phone
Brand: Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
SKU: 743514442

Shandong, ChinaShandong China Coal Industrial & Mining Supplies Group Co., Ltd.

US$150.00

1-99 Pieces

US$110.00

100+ Pieces

Product profile

Customization

Available

Usage

Phone

Type

Wired

Model NO.

BDJ-1

Support Network

Phone

Information content

Voice

Certification

Condition

New

Rated Voltage

DC 3.7V

Maximum Working Current

Less Than 650 Ma

Standby Current

Less Than 80mA

Ringing Loudness

More Than 70dB

Battery

3.7V/1200mAh

Standby Time

72h

Duration

6 Hours

Transport Package

as Your Requirement

Specification

CE, SGS

Trademark

China Coal

Origin

Shandong Provice, China

Production Capacity

1000 Sets Per Month

Key features

Explosion Proof Certification: Certified for Zone 0, 1, 2 with gas groups IIA, IIB, IIC and Temp class T1-T3.

Dual Communication Modes: Supports single call and group call with touchtone channel selection.

Wireless System Integration: Compatible with ordinary phones, mobile phones, and PHS via YWX-1 adapter.

Long Standby Duration: Battery provides up to 72 hours standby time and 6 hours talk duration.

High Loudness Output: Ringing loudness exceeds 70dB for clear communication in noisy environments.

Wide Frequency Range: Operates on 450-470 MHz with 16 available channels.

Robust Talk Range: Effective communication distance up to 3 km in hazardous areas.

Comprehensive Safety Features: Includes monitoring functions and strict usage precautions for safety.

Company profile

Self-brandedOverseas Services100% Finished Products InspectionProduct Certification

Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.

Shandong, China

Business Type: Manufacturer/FactoryExport Year: 2008-08-01Nearest Port: Qingdao, Ningbo,Shanghai,ShenzhenAverage Response Time: ≤0.31hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB

AI-Powered supplier vetting

SummaryThe supplier is a combined company with manufacturing, export, service, quality-control, R&D, and sustainable-development capabilities. It offers broad customization, reports new-product development in the past year, and provides ODM services. Manufacturing evidence includes multiple processing and finishing machines, inventory capability, valid contracts with associated subcontractors, and documented inspection and corrective-action procedures. Overseas service is available in Denmark, Colombia, India, and Georgia, covering installation, debugging, maintenance, repair, and training, but the supplier has no overseas warehouse, showroom, agent, or branch. CE and CCC product certifications are reported. Financial records are identified for 2021–2023, but their results are not provided. The supplier has OEM experience with well-known brands but no Fortune 500 collaboration reported.

Supplier typeThe supplier is identified as a combined company and reports manufacturing equipment, inventory capability, and valid contracts with each associated subcontractor. This supports a combined manufacturing and service-oriented supplier profile, although the exact ownership or operating structure is not further detailed.

CertificationsThe supplier reports CE and CCC product compliance certifications and an unspecified management-system certification described as “Others.” Product certification coverage is explicitly stated, but the specific management certification is not identified.

After-Sales capabilityThe supplier provides overseas debugging, maintenance, repair, training, and equipment installation in Denmark, Colombia, India, and Georgia. It has no overseas warehouse, showroom, agent, or branch, which limits local infrastructure but does not negate the stated service offering.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and has an available SDK. These statements directly support active R&D and product-development capability.

Production capacityProduction-related evidence includes cutting, painting, sawing, and shearing equipment; inventory capability; valid manufacturing contracts with associated subcontractors; and a one-month average lead time in both off-season and peak season. Documented finished-product inspection, supplier-service procedures, and corrective/preventive-action records further support operational control.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. The same broad service range is reported in both R&D and design-capability information, providing clear evidence of extensive customization coverage.

Client casesThe supplier reports OEM service for well-known brands and participation in the Changsha International Construction Machinery Exhibition. It reports no collaboration with Fortune 500 companies; therefore, some customer and market-exposure evidence exists, but detailed customer names, projects, or verified case outcomes are unavailable.