Ordinary Exam Rooms

DescBoost K-14-80W phone blocker effectively blocks all wireless communication signals within the exam environment. By transmitting controlled electromagnetic interference signals across designated frequency bands, it establishes a localized electromagnetic isolation zone. Within this zone, wireless devices such as mobile phones, tablets, and smartwatches are unable to establish connections with external communication networks. This ensures information security and fairness during examinations, making it an essential safeguard for standardized testing environments.

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Hard-to-Block Exam Rooms

For examination environments with complex signal conditions—such as those near base stations or within reinforced buildings—we offer high-power, adjustable blocking solutions. Our N-14-120W cell phone blocker supports precise power＆frequency regulation, multi-channel frequency control, and customized antenna configurations to achieve uniform field strength and full-area coverage. Even under high-signal interference or multi-network overlap, the solution maintains stable and reliable shielding performance, ensuring comprehensive protection against wireless communication and cheating attempts.

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Features

Full-band Blocking

Our phone blockers provide full-spectrum interference coverage, effectively blocking mobile communication signals across 2G, 3G, 4G, and 5G networks (including broadcast 5G), as well as wireless communication channels such as walkie-talkies. It also disrupts Bluetooth, Wi-Fi, and wireless transmission signals used by covert earpieces, bone-conduction headsets, and other connected devices.

Omnidirectional Coverage


Our Omnidirectional signal blockers ensure complete 360° coverage in exam rooms, effectively blocking mobile phones, wireless headsets, and all other devices. By eliminating any chance of external communication, they safeguard exam integrity and fairness, providing a secure, distraction-free environment where every student can focus fully on their tests.

Long Service Life


Equipped with a built-in aluminum alloy radiator and six fans, the device delivers stable operation, superior heat management, and exceptionally long-lasting durability.



Security Solutions

Exam Room

Ensure fairness in examination halls

  • Full coverage
  • Omnidirectional design
  • Silent operation

Prison

Maintain order and security

  • Directional interference
  • Adjustable power output
  • Stable operation near base stations

Meeting Room

Maintain confidentiality

  • Full coverage
  • Low-noise operation
  • Remote management support

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.

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Prevent IED

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 Exam integrity.

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About Us

Certificates

Excellent Experience—Many User Reviews

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

Grace Mitchell

Germany

This is our second time ordering the the cell phone blockers from this company, 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 blockers.

James Walker

Indonesia

We've been using the N-14-120W signal blockers for our examination venues for years, and the performance is excellent every time. Shipping to Indonesia is surprisingly fast, often ahead of schedule. The supplier is very reliable, always quick to answer our technical questions and adjust settings for different venue sizes. They even confirm the specifications before shipping. The equipment is always well-packed and arrives in perfect condition. 100% RECOMMENDED! Ask for Chen—he provides fantastic support.

Mia Thompson

Canada

The N-14-120W blockers we ordered work perfectly! 📶 The shielding is strong and stable, and the build quality is excellent. Communication with the technical team was smooth and professional, making the whole process easy. We also received a performance report before bulk order, which gave us full confidence. Will definitely order more for our meeting rooms. Thank you!

Isabella Moore

United States

I'm very satisfied with the DescBoost cell phone blockers we deployed. Mr. Chen is an excellent support engineer—helpful, professional, and very attentive to our site requirements. The equipment performs flawlessly in our conference rooms, and shipping was fast. Highly recommend working with him, and we will definitely purchase again.

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.

Emma Richardson

United States

The shielding effectiveness, build quality, and packaging are excellent. The devices look professional and work very reliably. Planning to make them our main supplier for all secure meeting venues. 💖

Lucy

United States

Just received the 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! 🤩

Olivia Evans

Germany

The N-14-120W units work great, and the directional adjustment feature is very useful. The engineer 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!

Sophia Lee

United States

Very satisfied with the K-14-80W 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. 🙂

Razi Riz 

Vietnamese

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.

John Israel 

Canada

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.

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.