Can the volume be adjusted?

Yes, the Car Units feature electronic volume control and microphone gain adjustment to manage feedback and suit different environments.

What certifications does this product have?

The product is certified with CE, ISO, and FCC standards, ensuring quality and safety compliance.

What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 1 piece.

New Smart Wireless Voice Intercom for Emergency Call

Name: New Smart Wireless Voice Intercom for Emergency Call
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 851191915

Shanghai, ChinaShanghai Strong Engineering Construction Co., Ltd.

US$198.00-228.00

1 Piece

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Usage

Telephone

Type

Wired

Model NO.

IS-3F (Intercom system 3 frequency)

Information content

Voice

Certification

CE, ISO

Condition

New

Frequency

3 Kinds

Quantity

Depends on Floors

Transport Package

Carton Box

Specification

the phone is 200*120*50mm

Trademark

STRONG

Origin

Shanghai

HS Code

84313900

Production Capacity

30000 Pieces/Year

Key features

OSHA Recommended Safety: Industry standard for construction hoists, recommended by OSHA for safer work environments.

Crystal Clear Communication: Two-way voice intercom with noise cancellation and volume control for clear emergency calls.

No RF License Required: Uses protection loop line transmission, eliminating electromagnetic pollution and RF application needs.

Emergency Alarm Function: Equipped with emergency alarm switches on all units for immediate worker safety response.

Durable Construction: Heavy-duty composite Nylon Plastic enclosure designed for extreme weather and industrial use.

Flexible Frequency Options: Supports up to 3 multiple frequency channels (250KHz, 741KHz, 800KHz) to prevent interference.

Safe Low Voltage Power: Powered by safe 24 volts DC with backup battery supply for reliable operation during power loss.

Easy Installation: No antenna wire required; units are interchangeable and connect via standard protective grounding.

Company profile

Importers and ExportersYears of Export ExperienceSelf-brandedExhibition Experience

Shanghai Strong Engineering Construction Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤18h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShanghai Strong Engineering Construction Co., Ltd. is a China-based trading company established in 2014, focused on lift accessories and related construction machinery, mechanical, electrical, and hardware products. The supplier reports five employees, overseas service limitations, no overseas warehouse, showroom, agent, or branch, and participation in bauma China. It offers customization from samples and designs but does not provide private mold development, 3D software design, ODM, OEM for popular brands, or SDK support. Product information indicates new products were developed during the past year. Service procedures and corrective-action records are documented, although the approved supplier list lacks signatures or dates. Audit information identifies TÜV Rheinland, but the evaluation result is recorded as 0 and the stated report validity ended on 2025-08-12. Production capacity, financial credibility, and customer case evidence remain insufficient for firm conclusions.

Supplier typeThe supplier is identified consistently as a trading company and limited company, with no larger-company group affiliation. Its stated scope covers lift accessories and a broad range of construction machinery, mechanical, electrical, metal, hardware, rubber and plastic, and automobile-related products.

After-Sales capabilityThe supplier reports written procedures and records for service-capability assessment, a corrective and preventive action mechanism, and ten qualified service-capability suppliers. It lacks overseas warehouses, showrooms, agents, and branches, although it has participated in bauma China and reports lead times within 15 workdays.

R&D capabilityThe supplier reports having launched new products during the past year, indicating some product-development activity. However, it does not offer ODM, private mold development, professional technical-supplier R&D, 3D software design, or SDK support.

Customization capabilityThe supplier explicitly offers customization from samples and designs. However, it does not provide private mold development or 3D software design services, so customization appears available in defined forms rather than as a full design-and-development service.

Product Q&A

Q:Is this intercom system suitable for construction elevators?

Yes, it is specifically designed for construction hoists and building elevators, recommended by OSAH as an industry standard for safety.

Q:Do I need to apply for a radio frequency license?

No, the system uses a protection loop line for signal transmission, so no radio frequency application is needed and there is no electromagnetic pollution.

Q:What are the available frequency channels?

The system supports up to 3 multiple frequency channels: 250KHz, 741KHz, or 800KHz, allowing users to select the best channel to avoid interference.

Q:How is the device powered?

It is powered by safe 24 volts DC and includes a backup battery supply for the car unit to ensure operation during power outages.

Q:What is the effective communication range?

The effective range is more than 300 meters, provided the conductor loop resistance is less than 600 ohms.