What are the power supply requirements?

It requires an AC 110-240V input (50-60Hz) and outputs 12V DC 1A. Various plug types (EU, US, AU, British) are optional.

Does the device support DTMF dialing?

Yes, DTMF dialing is supported.

What is the minimum order quantity?

The minimum order quantity is 1 PC.

GSM 4 SIM Slots 4 FXS Ports Fixed Wireless Terminal 2g Fixed Cellular Terminal to Telephone Converter

Name: GSM 4 SIM Slots 4 FXS Ports Fixed Wireless Terminal 2g Fixed Cellular Terminal to Telephone Converter
Brand: Shenzhen Etross Telecom Co., Ltd.
SKU: 2137822412

Guangdong, ChinaShenzhen Etross Telecom Co., Ltd.

US$150.00

1-9 Pieces

US$145.00

10-99 Pieces

US$140.00

100+ Pieces

Sample price:US$120.00/piece.Request sample

Product profile

Customization

Available

Type

GSM FWT Fixed Wireless Terminal

Usage

Telephone/Billing/PBX/Alarm System

Model NO.

GSM ETS-4S

Condition

New

Product Name

4 SIM Cards 4 Ports GSM Fixed Wireless Terminal

Frequency

GSM 850/900/1800/1900MHz

SIM Card Slot

FXS(Rj11) Port

IMEI Changeable

Support

Polarity Reversal

Support

Dtmf Dialing

Support

Locking Pin / Network

Support

Color

Black

Warranty

1 Year

Transport Package

20PCS/CTN

Specification

Carton size: 60*37*27cm

Trademark

Etross or OEM Brand

Origin

Guangdong

HS Code

8517629300

Production Capacity

10000/Month

Key features

4 SIM Slots & FXS Ports: Supports 4 SIM cards and 4 FXS ports for multiple concurrent connections.

Quad Band GSM Support: Compatible with GSM 850/900/1800/1900MHz for global network coverage.

Versatile Application: Ideal for PBX, billing systems, alarm systems, and VoIP gateways.

Industrial Grade Module: Uses Quectel M35 module for stable and reliable performance.

Customizable Features: Supports IMEI change, polarity reversal, and DTMF dialing.

Optional Backup Battery: 7.2V 1300mAh Li-ion battery for 24h standby and 2.5h talk time.

Adjustable Settings: Dial interval and voice volume can be adjusted via telephone set.

Multiple AC Adapter Options: EU, US, AU, and British plug types available for international use.

Company profile

Experienced TeamYears of Export ExperienceHigh Repeat Buyers ChoiceImporters and Exporters

Shenzhen Etross Telecom Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 17 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤7.20h

AI-Powered supplier vetting

SummaryShenzhen Etross Telecom Co., Ltd. is a Shenzhen-based limited company with 18 employees, focused on communication equipment and electronic products, including fixed wireless phones and terminals. It reports production capacity of up to 1,000 sets per day, 17 years of export experience, sample-based customization, and R&D activity including new products in the past year and ODM services. Some products are stated to have passed CE, FCC, and RoHS certification, but specific products and certificate records are not provided. Service-control documentation is weak: there are no written procedures or records for corrective actions or complaint handling, and overseas service infrastructure is absent. Financial-related records are identified for 2021–2023, but no substantive financial results are provided. No customer cases are presented.

Supplier typeThe supplier is Shenzhen Etross Telecom Co., Ltd., a combined, privately structured limited company located in Shenzhen, China, with 18 employees. Its licensed scope covers manufacturing communication equipment and electronic products, and it is not identified as part of a larger group.

CertificationsThe company states that some products have passed CE, FCC, and RoHS certification. However, the slices do not identify the certified products or provide certificate details, so the evidence supports stated certification coverage but not comprehensive verification.

After-Sales capabilityThe supplier has no written procedures or records for customer complaint handling or corrective and preventive actions. It also reports no overseas warehouse, showroom, agent, branch, or offline trade-show participation; therefore, documented and international after-sales support appears limited.

R&D capabilityThe supplier reports an R&D center with experienced engineers, new products developed during the past year, and ODM services. It does not provide an SDK and does not serve popular brands through OEM, so innovation capability is demonstrated but limited in the stated areas.

Production capacityThe supplier states production capacity of up to 1,000 sets per day, has listed production and testing equipment, and reports peak- and off-season lead times within 15 working days. Its 18-employee workforce and the absence of further capacity records limit the breadth of verification, but the stated operating capability is positive.

Customization capabilityThe supplier supports customization from samples and provides ODM services, directly indicating both sample-based customization and original design manufacturing capability. No broader customization scope or SDK support is stated.