What is included in the standard package?

The package includes a power supply adapter, AC power cord, installation kit, and user manual.

Tetra 380 Tetra 390 Full Bandwidth Interphone Signal Booster

Name: Tetra 380 Tetra 390 Full Bandwidth Interphone Signal Booster
Brand: Shenzhen Greetwin Telecom Co., Ltd
SKU: 2011510595

Guangdong, ChinaShenzhen Greetwin Telecom Co., Ltd

US$279.00

1-99 Pieces

US$255.00

100+ Pieces

Product profile

Customization

Available

Type

Signal Repeater

Transmission Medium

Wired

Model NO.

GW-20T

Standard

Lightning Protection

Without Lightning Protection

Certification

ISO, RoHS, CE

Condition

New

Output Power

20dBm

Gain

70dB

Transport Package

Neutral Packing

Specification

CE, RoHS, ISO

Trademark

Greetwin

Origin

Shenzhen

HS Code

8543709200

Production Capacity

2, 000PCS/Month

Key features

Wide Band Coverage: Supports 380-395MHz with optional 410-430MHz bands for extensive signal expansion.

High Gain Performance: Delivers up to 70dB gain and 20dBm output power for effective signal boosting.

Large Area Coverage: Effectively covers 500 to 1500 square meters without signal obstruction.

Customizable Band Options: Available as wide band booster or customizable selective band booster.

Low Interference Design: Features high linear design and ALC function to minimize interference to BTS.

Universal Device Support: Compatible with all cellular devices supporting voice, data, and video.

Robust Reliability: High MTBF exceeding 50,000 hours ensures long-term stable operation.

Global Power Compatibility: Operates on AC100-240V with adapters for EU, US, UK, SA, and China standards.

Company profile

High Repeat Buyers ChoiceYears of Export Experience3D Software DesignR&D Capabilities

Shenzhen Greetwin Telecom Co., Ltd

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2009-08-01Nearest Port: ShenzhenAverage Response Time: ≤5.79hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CIF, EXW, Others

AI-Powered supplier vetting

SummaryThe supplier is identified as a manufacturer with three production lines and stated output of mobile signal boosters and signal jammers. It provides broad customization, ODM, and OEM services, including OEM support for recognized brands, and reports product development during the past year. Its business scope covers communication, security, electronic, and related equipment, with import and export permitted. Production and export capabilities are documented, including markets across multiple regions and a stated off-peak lead time within 15 working days. Service procedures, corrective actions, complaint handling, and finished-product inspection procedures are documented and followed. However, the supplier reports no available SDK, no in-stock service, and no overseas warehouse or showroom. The provided information does not establish certifications, financial strength, or specific customer cases.

Supplier typeThe supplier is explicitly classified as a manufacturer. Its described offerings cover manufacturing capacity, quality control, R&D, export trade, and related capabilities, supporting a direct manufacturing profile.

After-Sales capabilityThe supplier has written procedures and followed records for service assessment, corrective and preventive actions, and customer complaint handling. However, it reports no in-stock service capacity, overseas warehouse, or overseas showroom, indicating procedural service capability but limited stated overseas support infrastructure.

R&D capabilityThe supplier reports new products during the past year, offers ODM services, and supports customization from samples and designs. It does not have an available SDK, which limits the documented software-development interface capability, but this alone does not negate the stated product R&D evidence.

Production capacityThe supplier is a manufacturer operating three production lines and reports annual production quantities of 2,000,000 mobile signal boosters and 2,000,000 signal jammers, with a stated off-peak lead time within 15 working days. It also has valid manufacturing-capacity contracts with each associated subcontractor, although no in-stock capacity is available.

Customization capabilityBoth slices explicitly list customization from samples, designs, full customization, minor customization, and flexible customization. The supplier also reports ODM availability, providing direct evidence of broad customization capability.