How is the system powered?

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

What should be checked if communication fails?

Check if the protective ground wire of the coupler is grounded in the middle, ensure proper connection to prevent high resistance, and verify cable shielding against motor interference.

Is customization available for this product?

Yes, customization is available from samples and designs, with frequency options customizable to 3 kinds depending on the number of floors.

Home Security Intercom Construction Hoist Intercom Speaker

Name: Home Security Intercom Construction Hoist Intercom Speaker
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 786030762

Shanghai, ChinaShanghai Strong Engineering Construction Co., Ltd.

US$198.00-228.00

1 Piece

Sample price:US$155.00/piece.Request sample

Product profile

Customization

Available

Usage

Telephone, Workstation, Server, Mobile phone

Type

Wired

Model NO.

HC2.0

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 Standard: Recommended by OSHA and considered the industry standard in USA, Canada, and Australia.

Crystal Clear Communication: Provides clear voice communication to enhance safety and productivity on construction sites.

No RF License Required: Uses protection loop line transmission without electromagnetic pollution, avoiding radio frequency applications.

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

Customizable Frequency Options: Supports 3 kinds of frequency channels (250KHz, 741KHz, or 800KHz) for flexible installation.

Durable Weather-Resistant Design: Heavy-duty composite Nylon Plastic enclosure operates reliably in extreme weather conditions.

Safe Low Voltage Operation: Powered by safe 24 volts DC with backup battery supply for continuous operation.

Easy Interchangeable Units: All units are interchangeable with no antenna wire required for simplified maintenance.

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:What are the main applications of this intercom system?

It is mainly used on construction and temporary hoists/elevators to provide emergency calls and general communication between workers and elevator operators.

Q:Does this system require a radio frequency license?

No, the signal transmission uses a protection loop line without electromagnetic wave pollution, so no radio frequency application is needed.

Q:What safety features are included in the system?

The system includes emergency alarm switches on all units, operates on safe 24 volts DC, and features a mute function to limit broadcast interference.

Q:What are the available frequency options?

There are three frequencies available: 250KHz, 741KHz, or 800KHz, allowing for multiple channel selection.

Q:What is the effective range of the intercom?

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