What is the power supply requirement for the system?

The system operates on 24 volts DC for the units, with a supply voltage of 220V AC or 110V AC.

Can the units be used in emergency situations?

Yes, all units are equipped with emergency alarm switches to facilitate immediate contact during accidents or medical emergencies.

Is customization available for this product?

Yes, customization options are available based on samples or designs, with quantity depending on the number of floors.

Construction Elevator Bluetooth Intercom, Headset, Interphone,

Name: Construction Elevator Bluetooth Intercom, Headset, Interphone,
Brand: Shanghai Strong Engineering Construction Co., Ltd.
SKU: 851187585

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: Recommended by OSHA as the industry standard for construction hoist communication in USA, Canada, and Australia.

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

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

Emergency Alarm Function: Features emergency alarm switches on all units for critical worker safety and rapid medical response.

Extreme Weather Durability: Heavy duty composite Nylon Plastic enclosure designed to operate reliably in extreme weather conditions.

Long Range Communication: Effective range exceeds 300m with conductor loop resistance under 600 ohm.

Adjustable Volume Control: Electronic volume control with microphone gain adjustment to prevent feedback and ensure clear voice.

Backup Battery Power: Car unit includes backup battery power supply to ensure operation during power failures.

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: ≤15h 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 available frequency channels?

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

Q:Does this system require a radio frequency license?

No, it uses a protection loop line for signal transmission, so no radio frequency application is needed.

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.

Q:What causes poor communication or interference?

Poor communication is often caused by high resistance from ground wiring, poor connections, or interference from electric motors requiring better cable shielding.

Q:How should the protective ground wire be installed?

The protective ground wire must pass through the coupler hole and connect to the ground; it cannot be grounded in the middle ground.