What are the lead times for delivery?

Peak and off-peak season lead times are both within 15 workdays.

What certifications does the product have?

The product holds FCC and CE certifications.

Why might communication fail?

Communication failure can be caused by improper grounding of the coupler, poor connections, or interference from electric motors.

3 Frenquencies Construction Interphone Elevator Security

Name: 3 Frenquencies Construction Interphone Elevator Security
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 851178625

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

Frequency

3 Kinds

Quantity

Depends on Floors

Model NO.

IS-3F (Intercom system 3 frequency)

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 elevators, recommended by OSHA for worker safety.

Three Frequency Options: Available in 250KHz, 741KHz, or 800KHz channels for clear communication.

No Antenna Required: Uses protection loop line for stable signal transmission without external antennas.

Emergency Alarm System: Features alarm switches on all units for immediate emergency response.

Extreme Weather Durability: Heavy-duty composite nylon plastic enclosure designed for harsh conditions.

Safe 24V DC Operation: Powered by safe 24 volts DC with backup battery for the car unit.

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

Customization Available: Customization options available from samples and designs.

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.