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.

Can the volume be adjusted?

Yes, it features electronic volume control for convenient adjustment and a mute function to limit broadcasts.

Is customization available for this product?

Yes, customization is available from samples and designs, specifically regarding frequency and quantity depending on the number of floors.

Dust-Proof and Noise-Reducing Intercom System of Construction Hoist

Name: Dust-Proof and Noise-Reducing Intercom System of Construction Hoist
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 754827722

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

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 emergency communication.

Three Frequency Options: Available in 250KHz, 741KHz, or 800KHz to suit different site requirements.

No Radio Frequency License: Uses protection loop line transmission, eliminating need for RF application or electromagnetic pollution.

Emergency Alarm Function: Built-in alarm button allows workers to contact operators immediately during medical emergencies.

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

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

Volume Control & Mute: Electronic volume control and mute function prevent feedback and limit broadcast interference.

Customization Available: Customization from samples and designs available for frequency and quantity based on floors.

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 causes communication failure?

Failure is often caused by the protective ground wire of the coupler being grounded in the middle ground, or the protective earth wire and ground wire in the hanging basket not being connected.

Q:Why is there poor communication?

Poor communication is typically due to high resistance from ground wiring, poor connections, or interference caused by electric motors.

Q:Does this system require radio frequency application?

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

Q:What are the available frequency channels?

The system offers three frequency channels: 250KHz, 741KHz, or 800KHz.

Q:How is the system powered?

It operates on safe 24 volts DC and includes a backup battery power supply for the Car unit.