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Cellular Signal Amplifier 900/2100mhz Repeater LTE Signal Booster Powerful 2G 3G 4G 5G mobile signal booster

Basic Properties
Place of Origin: China
Brand Name: ATNJ
Certification: CE,ROHS,CCC,TUV,BV, ISO
Model Number: A021-900/2100
Trading Properties
Minimum Order Quantity: 5Pcs
Price: USD+86---110+kit
Payment Terms: T/T, Western Union,Paypal,Alibaba,Bank transfering.
Supply Ability: 1000+unit+per day.
Specifications
Frequency Range: 900MHz:890-915MHz/ 935-960MHz,2100MHz:1920-1980MHz/2110-2170MHz Device Gain: 70dB
Device Output power: 20dBm Color: Grey And Customized
AGC Intelligent function: Done,31dB @ 1dB/ Step ALC Intelligent function: Done
Power Supply: AC 110~220V±20%, 50/60Hz(AC 220V/ DC5V/2A Power Adapter) Products type: 4g Repeater, Gsm Repiter
High Light:

ODM Mobile Wireless Dual Band Signal Booster

,

20dBm Dual Band Signal Booster

,

20dBm 4G LTE Signal Booster

Product Description

Cellular Signal Amplifier 900/2100mhz Repeater LTE Signal Booster Powerful 2G 3G 4G 5G mobile signal booster


 

Signal Booster Description:

ATNJ Mobile Signal Repeater.pdf

When the cellphone is connected to the external antenna and the booster, it will think that the cell tower is nearby. Data rates are improved, and dropped calls will be prevented. And best of all, the phone's battery life will be extended, because the phone is not using its full power to find signal. An antenna is mounted outside the vehicle and gets the signal from the network before it is blocked by glass and metal.

Technical Specifications

Specifications

Parameters

Frequency Range (Customers to Choose)

Uplink

890-915MHz, 1920-1980MHz

Downlink

935-960MHz, 2110-2170MHz

Frequency Bandwidth (3dB Bandwidth)

25MHz&60MHz

Automatic gain control (Step Attenuation)

31dB @ 1dB/ Step

Auto Gain Control

20dB Min.

Spurious Emission

≤ -15dBm/30kHz

9kHz~1GHz: ≤ -36dBm/30kHz

1GHz~12.75GHz: ≤ -30dBm/30kHz

Inter-Modulation Attenuation ACPR

≤ -40dBc / 30kHz (measured under rated output power)

In-band Ripple

≤ 3dB

VSWR

<=2

I/O Impedance

50 Ω

Noise Figure

≤ 5dB

System Delay

≤ 5μs

RF Connector(Customers to Choose)

N(Female)

Operating Temperature

Operation: - 10°C ~ + 55°C / Storage: -20°C ~ +60°C

Power Supply

AC 110~220V±20%, 50/60Hz(AC 220V/ DC5V/2A power adapter)

Dimensions

165*130*40 (mm)

Weight

≤0.8 kg(Net)

Alarm Monitoring System

Alarm for uplink self-oscillation

Origin

Shenzhen

Further detail pls click here for downloading the products specification:

900+2100MHz A021 Mobile Signal Repeater.docx.pdf

Cellular Signal Amplifier 900/2100mhz Repeater LTE Signal Booster Powerful 2G 3G 4G 5G mobile signal booster 0Cellular Signal Amplifier 900/2100mhz Repeater LTE Signal Booster Powerful 2G 3G 4G 5G mobile signal booster 1

 

Selling Point

 

⭐ Intelligent to guide the installation with LCD .

⭐ Real time display the signal strength .

⭐ Automatic dormancy when no user make the calling .

⭐ Automatic alarm when installation mistake and provide the according solution .

⭐ Automatic adjust the system gain to avoid the repeater self-excitation .

⭐ Initiative reminding when the device was damaged .

⭐ Supports from 0.2 to 20MHz bandwidth adjusted(Customized) .
⭐ Supports 5G bandwidth, 40MHz,50MHz,60MHz,70MHz,80MHz,90MHz,100MHz(Frequency Bandwidth Customized) .

⭐With WIFI Monitor+Control(Customized),NMS(network management system),Function Optional .

⭐ A variety of appearance customization.

 

Cellular Signal Amplifier 900/2100mhz Repeater LTE Signal Booster Powerful 2G 3G 4G 5G mobile signal booster 2
 

 

We are manufacturer, and have our own factory.

FAQ:

 

1. Are you trading company or manufacturer ? Could I use our own logo and label? We are the factory, with good trading service. We provide OEM/OEM service.

2. Can I have a sample order? What is your MOQ?
Yes, we welcome sample order to test and check quality. MOQ is 1 for normal products.

3: Is it easy to set up your items?
A: Yes. We have a user manual and support technical support 24/7.

4. What is your warranty time?
We promise 3-year warranty for all products shipped from us. Man-made sabotage and natural factors are not within the scope of warranty.

5. Please feel free to contact us if there are any other questions.

Warranty


● Please note that we always check and test the product twice before shipping and pack them well as far as possible.If the product is broken at receiving,please contact us,we would resend you a new one.
●Three years warranty period for our booster,it is only 3 months for the accessories.If the booster have any problems, please show us an video or some photos of your complete installation, we will help you. Please do not open dispute or leave negative feedback before contact us.we will reply you within 24 hours,except holiday.

Overall Rating
5.0
★★★★★
★★★★★
Based on 50 reviews recently
5 star
100%
4 star
0
3 star
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2 star
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All Reviews
  • A
    Aleix Pellicer Garcia
    Belgium Nov 9.2025
    ★★★★★
    ★★★★★
    It works great, the frequency can be adjusted to Vodafone correctly,and LTE speed goes fast.
  • B
    Benn Vincent Brown
    Germany Aug 14.2025
    ★★★★★
    ★★★★★
    To deal with ATNJ has been a pleasure because of the clever and special attention from Emma to assist me when our local post office neglected to make the delivery, Emma had better local information than me here in Australia. Because I live in a remote valley the local signal is very weak and the nearest tower is 20Km away. The ATNJ product has been excellent and delivers a stronger signal than two other well known products that I have tried. I am very effetively using two indoor antennas to cover down and upstairs The design is neat and effective and the instructions well describe how to instal and best practice. I can recommend this product with no hesitation.
  • P
    Priyanshu Agarwal
    Malta Jul 4.2025
    ★★★★★
    ★★★★★
    Good quality item and great customer service to help resolve issues