120W Adjustable Cell Phone Blocker

In high-risk prison environments, unauthorized mobile communications can leak critical intelligence to inmates or external accomplices, enabling coordinated escapes, smuggling, and violent incidents that threaten prison safety and order. Our device delivers full coverage blocking of 2G/3G/4G/5G, GPS, WiFi, and Bluetooth signals—effectively cutting off inmate communications and preventing these security risks.

Click to WhatsApp: +86 15813705916

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Features - Mobile Optimized
Features

Reliable operation near base stations

Designed to handle strong cellular signals, ensuring stable performance where standard blockers fail.

Directional blocking technology

Forward-focused blocking avoids affecting areas behind the device, providing precise coverage control.

Adjustable power

RF module with adjustable power and high-gain directional antenna allows flexible range control.

Configurable range

Effective blocking distance from 8 to 100 meters, adaptable to different operational needs.

Discrete and portable design

Suitcase-style with built-in antenna, allowing quick deployment or wall installation.

Simultaneous multi-band jamming

Blocks mobile phones, Wi-Fi, GPS, and other bands simultaneously for full signal suppression.

Click to WhatsApp: +86 15813705916

Why Choose Us

Global Experts in Cell Phone Blockers

  • 21-Year Trusted Manufacturer: GJB 9001C, EMC, and CE certified, serving correctional, military, and government clients worldwide.
  • Factory price, wholesale discount.
  • OEM/ODM Available: Customizable signal blockers with flexible sample orders.
  • High-Performance Blockers: Blocks all major communication bands, ensuring complete coverage and prison security.

Click to WhatsApp: +86 15813705916

About Us

Prevent Coordinate Escapes&Smuggling

Since 2004, DescBoost has been used for cell phone blockers by governmental customers in Europe, North America, Australia, the Middle East, and Asia.

We provide professional directional blocking solutions for conference rooms. Installation points are scientifically planned based on the height and structural layout of the meeting room, preventing security intelligence leaks.

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500W Full-band Pelican Case Blocker

It provides a comprehensive solution to block communication signals from various wireless devices, such as drones, remote-controlled toys, walkie-talkies, mobile phones, and Wi-Fi devices, within the frequency range of 20–6000 MHz.
These blockers neutralize IED triggers, ensuring personnel and mission safety in hostile zones.

Click to WhatsApp: +86 15813705916

Prevent IED

Excellent Experience—Many User Reviews

Cumulative shipments of over 5,000,000 units, with continuous positive reviews from customers

Emily Brown

Australia

We have been using the N-14-120W signal blockers in our prison facilities for years, and the performance remains excellent every time. Shipping to Australia is surprisingly fast, often arriving ahead of schedule. The supplier is very reliable, always quick to answer our technical questions and adjust settings for different prison areas. They even confirm the specifications before shipping. The equipment is always well-packed and arrives in perfect condition. 100% RECOMMENDED! Contact Mr. Chen—he provides fantastic support.

Ashley Thompson

United States

The quality and craftsmanship of these signal blockers are outstanding. The units we received surpassed our expectations—every detail is well designed. We will stick with this supplier because the reliability and performance are worth it. Truly a trustworthy partner!💕👍

Mia Thompson​

Canada

The N-14-120W blockers we ordered for our correctional facilities are working perfectly! 📶 The signal blocking is strong and stable, and the build quality is robust enough for demanding prison environments. Communication with the technical team was smooth and professional, making the entire process hassle-free. We also received a performance report before placing the bulk order, which gave us full confidence. We will definitely order more for our other prison units. Thank you!

Johnson Lam 

South Africa

As a prison security officer, I had doubts at first about how effective the signal blocker could be.However, this high-power phone blocker has exceeded all my expectations. Even near strong cellular base stations, it consistently maintains full effectiveness. It’s perfect for supporting comprehensive, multi-layered security protocols. Truly a professional-grade solution tailored for correctional facility security.

Lucy

United States

Just received the N-14-120W blockers and they all look robust and perform beautifully 💪 The signal blocking is always consistent and the pricing is very fair. This supplier has been reliable every time—highly recommend! 🤩

Razi Riz 

We needed a reliable solution to block unauthorized communications used by inmates to smuggle contraband or coordinate escapes and to prevent sensitive information leaks during meetings. This signal blocker exceeded our expectations! Not only is it high-powered, but it also allows precise adjustment of power and frequency. Its unobtrusive design delivers exceptional effectiveness. Once activated, there are no signal blind spots and no risk of information leaks—exactly what we needed for enhancing prison security.

Grace Mitchell

Germany

This is our second time ordering the N-14-120W model, and we are very satisfied. The shielding performance is excellent, and both the industrial design and cooling system are impressive. Mr. Chen is always friendly and replies quickly—often within an hour, despite the time difference. This supplier has our full trust. Confidently recommended for any organization needing high-quality signal blo.

Lily Harris

United States

Delivery was slightly delayed due to customs, but once we received the N-14-120W units, we were impressed by the build quality. The heat dissipation and signal stability are excellent, and performance exceeded expectations. The devices are professional, durable, and ideal for our secure facilities. Tested under full load and they performed perfectly. Very satisfied and planning a larger order. Highly recommended supplier.

Olivia Evans

Germany

The N-14-120W units work great and the directional adjustment feature is very useful. Mr. Chen was very professional, offered excellent advice, and helped us optimize the antenna setup for maximum coverage. Extremely happy with the result and will order more if needed. Thank you!

John Israel 

We installed this signal blocker throughout our prison, and it immediately enhanced our security measures. Its precise, adjustable power settings let us customize coverage exactly where it’s needed. By blocking all mobile and wireless signals, we have effectively reduced the risks of attacks and violence. It has become an indispensable tool for protecting the integrity of our facility.

Sophia Lee

United States

Very satisfied with the DescBoost blockers—will be placing another order soon. They work perfectly in our training centers. We even customized the frequency ranges to match local networks, making the solution feel unique and tailored. 🙂

Isabella Clark​

United States

Engineer Chen provided excellent customization support, designing a multi-unit configuration perfectly suited for our prison facility. The tailored solution delivers precise signal-blocking performance. Highly recommended for specialized needs.