What is the coverage area for 20dBm output power?

20dBm output power typically covers 500-1500 square meters, depending on local signal strength.

What is included in the standard package?

The package includes one AC/DC power adapter, one AC power cord, one installation kit, and one user manual.

What should I do if I don't know the frequency in my country?

Please contact us with your inquiry, and we will help you find the correct frequency and solve your problems.

Good Helper 20dBm Wide Band Preamplifier for GSM 900 Signal Booster

Name: Good Helper 20dBm Wide Band Preamplifier for GSM 900 Signal Booster
Brand: Shenzhen Greetwin Telecom Co., Ltd
SKU: 840153835

Guangdong, ChinaShenzhen Greetwin Telecom Co., Ltd

US$70.20-80.50

1 Piece

Product profile

Customization

Available

Type

Signal Repeater

Transmission Medium

Wireless

Model NO.

GW-20PAG

Standard

Lightning Protection

With Lightning Protection

Certification

ISO, GS, RoHS, CE

Condition

New

Power

20dBm

Mgc

31dB

RF Connector

N-Female

Impedance

50 Ohm

Weight

< 1.5 Kg

Description

Repeater Cell Phone Amplifier

Transport Package

Neutral Packing

Specification

CE, RoHS

Trademark

Greetwin

Origin

Shenzhen

HS Code

8543709200

Production Capacity

2, 000PCS/Month

Key features

Wide Band Support: Supports GSM900, DCS, WCDMA, LTE, CDMA and more bands simultaneously.

High Output Power: 20dBm output power ensures signals reach BTS towers from distant sites.

Compact Design: Elegant, lightweight structure with low power consumption and heatsink cooling.

Smart Alarm System: LED indicators for self-oscillation detection and normal operation status.

Universal Power Input: AC 90-264V and DC 9V/3A support for global voltage compatibility.

High Stability: MTBF over 50,000 hours with frequency stability within 0.01ppm.

Customizable Options: Customize brand logo, colors, frequencies, and cover images for OEM/ODM.

Wall Installation: Compact size (170x126x21mm) allows easy wall mounting in various environments.

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: ≤5.96hTerms 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.