Cell Signal Amplifier for Home Nikrans NS-550GDW

Indoor coverage:
5400 ft²
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Customer Reviews: 5

3 Band
Kit contents
  • NS-550GDW triband repeater,
  • indoor antenna,
  • outdoor antenna + 10m cable,
  • power supply,
  • manual
Shipping (3-7 business days) to United Kingdom
  • 5-step pre-delivery check
  • 30-DAY return policy
  • 3-YEAR warranty & service
  • Secure payments


NS-550GDW is a unique triband mobile signal repeater for home that improves mobile signals at three different frequencies, GSM 900 MHz & 1800 MHz and 2100MHz for 3G internet. The device is compatible for improving signal strength of all providers in Europe inclusive those of the UK.

Since these models are developed with better specifications and features than the previous ones, you can now get a coverage area as large as 500 m2(5400 ft2), which is suitable enough for middle-sized houses, parkings, garages, basements, offices, etc.

NS-550GDW triband signal booster guarantees crystal clear phone calls at 900 and 1800MHz frequencies, and blazing fast 3G internet at both 900 and 2100MHz. In addition, this triband repeater will also boost 4G Internet at 1800MHz frequency band. As a result, you get an opportunity to improve GSM, 3G, and 4G signals at the same time.

Here are a few of the useful features of this model:

  • Shut-off function helps the device avoid damage resulting from incorrect installation or self-oscillation.
  • Automatic Gain Control automatically adjusts gain levels based on incoming signal strength.
  • Manual Gain Control is ideal for tech-savvy users preferring to control gain levels manually.
  • Automatic Level Control adjusts gain levels with the purpose of avoiding signal interference.
  • CE and RoHS certificates of conformity to European health and safety standards. The device does not emit and harmful radiation and is 100% safe for human usage.

Order this booster and stabilise your GSM, 3g and 4G internet connection with an all-in-one booster!


Coverage: 5400 ft²
Up-link freq: 68
Down-link freq: 935-960 & 1805-1880 & 2110-2170
Up-link Gain: 60 dB
Down-link Gain: 68 dB
Power Output: 13 dBm
Working t °C: -25/+55 °C
Humidity: 5 - 95 %
Size (mm): 250 × 220 × 52
Booster Weight: 3.2 kg
Power supply: Input AC90~264V,output DC5V/2A
Model Year: 2017
Download Manual Download Datasheet

How it works

This triband cell phone signal amplifier is a reliable device that is absolutely perfect from a technical point of view. Despite its opportunity to work with different types of mobile network simultaneously, it is extremely simple in use. Even if you have never seen any devices of this kind before, it won’t be a problem for you to install it and switch it on. 1 hour is a maximum period of time that is necessary for a person without any previous technical experience to install NS-550GDW and to start enjoying the improved mobile connection. Two antennas and one amplifier box are the main components of this unique device that is intended to make your mobile communication better.

Customer Reviews

 ·  E  ·  Verified Buyer  · 

Wish I Had Bought it Much Earlier

This booster does miracles! Immediately after the installation my signal became stronger and I was able to use my data. I could hardly believe it was possible. Thank you very much for making my communication untroubled.

Dear Emma, thank you for the review. We are so glad that you are satisfied with our work. Best regards, Support team.

 ·  D  ·  Verified Buyer  · 

Didn’t Expect it’s so Effective

I bought it a month ago because the level of signal at home was unbearable. Actually, I was gladly surprised as the result was fascinating – stable signal in every corner of the house. Recommend it!

Dear Daniel, thank you very much for leaving a review. We would be glad to see you again. Best regards, Support team.

 ·  M  ·  Verified Buyer  · 

Ensures stable reception

The booster is reliable. It ensures stable reception of mobile signal. Using a mobile phone became more pleasant as there are no more disconnections, the audibility is much better.

Dear Max, thank you for leaving the feedback. We are glad that you are pleased with the result. Best regards, Support team.

 ·  M  ·  Verified Buyer  · 

I’m Happy

The signal inside my house was so awful, that it was hard to believe that anything could help me. Then a friend of mine advised installing a mobile booster. He helped me to choose the model and voila – I am the happiest person ever!

Dear Morgan, thank you for your review. We are so glad that you are happy about your purchase. Best regards, Support team.

 ·  R  ·  Verified Buyer  · 

Excellent for Office

I have bought it for my office and I like the way it amplifies the signal. All my colleagues have noticed that the quality of mobile connection has become much better. The device is effective and reliable.

Dear Ruby, thank you for the review. We are glad that you all liked the booster. Best regards, support team.

Case Studies

Roger Bousfield, Worcester

Finally we have a decent connection!

After I plugged in the signal repeater NS-550GDW, the signal became strong and stable in every room of my office, even the further ones – it’s equally strong throughout the whole booster’s working area. And no matter how many people were using it simultaneously, it never affects the signal strength in a bad way. That’s exactly what I needed in my office to help us work well, make calls and use the internet.

Michael Davis, Harrogate

Wide range and attractive prices.

We decided to go with Mobile-signal-boosters.co.uk’ signal repeater for several reasons. They had complete and detailed information about everything we needed to know, their boosters have adequate prices, their payments are secure, and they have a wide range of product models for us to choose from. We needed something that would work throughout our whole house, on both floors, and we found it at a very attractive price.

Stuart Herrington, Rochdale

Thank you for great product!

I really want to thank Mobile-signal-boosters.co.uk and their team for helping me out with my issues. My case was pretty classic, I think, but they still managed to choose a really affordable booster for me, with no tricks. Their website is very helpful and contains all the information about how it all works, and their support ream can help with any question. I totally recommend Mobile-signal-boosters.co.uk to anyone who has weak signal.

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