What causes communication failure in this system?

Common causes include the protective ground wire being grounded in the middle, poor connections, high resistance, or interference from electric motors.

What is the warranty period for this product?

The product comes with a 1-year warranty.

What are the minimum order quantity and payment terms?

The minimum order quantity is 1 piece. Accepted payment terms include LC, T/T, D/P, PayPal, and Western Union.

Good Quality Wireless Emergency Button Intercom

Name: Good Quality Wireless Emergency Button Intercom
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 824707395

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

Workstation

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

Warranty

1 Year

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.

Three Frequency Options: Available in 250KHz, 741KHz, or 800KHz to prevent interference in elevator-intensive areas.

No Radio Frequency License: Uses protection loop line transmission, eliminating need for radio frequency application.

24V DC Safe Operation: Powered by safe 24 volts DC with backup battery for Car units and extreme weather resistance.

Heavy Duty Construction: Enclosed in heavy duty composite Nylon Plastic for durability in industrial settings.

Two-Way Communication: Enables clear voice contact between workers and elevator operators for emergency and general use.

Volume Control & Mute: Features electronic volume control, microphone gain adjustment, and mute function to limit broadcast.

Universal Interchangeability: All units are interchangeable with no antenna wire required for installation.

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.