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120W Full-band K-16 Omnidirectional Cell Phone Blocker 5G WIFI Blocker for School Exam
5G 4G Blocker Overview
The 5G 4G Blocker is a high-power, full-band signal suppression system designed for critical environments where wireless communication must be strictly controlled. Equipped with omnidirectional high-gain antennas and multi-channel segmented interference technology, it delivers stable, long-distance blocking of 5G, 4G, Wi-Fi, Bluetooth, GSM, and GPS signals.
Advanced Technology
Engineered with a high-performance radio frequency, the 5G 4G Blocker delivers powerful, stable, and precise full-band signal suppression for modern security demands.
Next-Gen UHF Interference Technology
Generates clean, stable jamming signals across 2G–5G, Wi-Fi, Bluetooth, and optional VHF/UHF communications.
Omnidirectional High-Gain Antenna Array
Delivers extended blocking distance with true 360° coverage—no blind spots.
Dual Status Display
Real-time voltage and working-status monitoring for easier management and maintenance.
Industrial Cooling System
Six silent fans + aluminum alloy heat sinks provide excellent thermal control for continuous high-power 24/7 operation.
Features & Benefits
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Full-Band Protection: Blocks 2G–5G, Wi‑Fi, Bluetooth, GPS, and optional walkie‑talkies to prevent all wireless cheating.
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120W High Power: Provides enhanced penetration and extended coverage, effectively blocking signal-weak zones near walls and windows, enabling full-room protection with a single unit.
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Omnidirectional High-Gain Antenna: Ensures uniform, seamless coverage without dead zones.
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Soft-Start Circuit Design: Protects internal components and extends device lifespan.
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Flexible Deployment: Wall-mounted or desktop installation for rapid setup.
FAQs
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Is the omnidirectional signal blocker effective in high-signal environments (e.g., near mobile towers)?
Yes, even in areas with strong external signals, such as near mobile towers, our omnidirectional blocker ensures reliable performance due to its high-power RF modules and high-gain antennas, effectively maintaining a fair examination environment free from external interferences. -
Will the signal blocker interfere with other electronic devices like projectors or microphones?
No, the blocker only affects wireless communication signals (mobile, Wi-Fi, Bluetooth, GPS) and does not interfere with wired devices such as projectors, printers, or classroom sound systems, ensuring normal teaching and exam operations. -
Can I adjust the blocking range for my examination hall?
Yes, the blocking range is adjustable from 1m to 30m, allowing for precise coverage of exam halls of different sizes without affecting nearby classrooms or office areas. -
Will multiple omnidirectional blockers interfere with each other in a large examination hall?
No, with proper placement, multiple blockers will not interfere with each other. We provide layout recommendations to ensure that each unit works seamlessly without overlap or signal leakage, maintaining the integrity of the exam environment. -
Do I need to install additional equipment outside the examination building for full coverage?
Typically no additional equipment is needed. However, in schools located near mobile towers or areas with strong external signals, an outdoor unit can be added to strengthen coverage and prevent unauthorized communications from penetrating the exam halls. -
Does installation require modifying the classroom structure?
No, our devices are flexible in installation. They can be wall-mounted, ceiling-mounted, or placed on any flat surface without any structural modifications, making them easy to integrate into school facilities. -
Can the device run continuously without overheating during long exam sessions?
Yes, the system supports continuous operation with built-in cooling systems and soft-start circuits, ensuring stable 24/7 operation throughout exam periods without cheating risks. -
Do you offer customization for school examination needs?
Yes, we provide OEM/ODM services to tailor power levels, frequency bands, and housing designs to fit specific school requirements, ensuring exam fairness and confidentiality according to your institution’s needs.
| Parameters | Performance and Metrics |
|---|---|
| Size | 465 × 433 × 89 mm (Length × Width × Height) |
| Weight | 4.5 kg |
| Shielding Range | 10–50 meters (depending on the strength of the base station signal) |
| Power Supply & Consumption | AC 110–220V / DC 24V / 25A, Power Consumption: 500W |
| Operating Temperature | -10℃ to +55℃ |
| Storage Temperature | -20℃ to +60℃ |
Electrical Parameters
| Output Terminal | Operating Frequency | Frequency Range Output Power | Channel Output Power |
|---|---|---|---|
| 5G | 758–803 MHz | 40 dBm (10W) | 5 dBm / 30 kHz (min) |
| CDMA | 870–880 MHz | 40 dBm (10W) | 5 dBm / 30 kHz (min) |
| GSM | 930–960 MHz | 40 dBm (10W) | 5 dBm / 30 kHz (min) |
| DCS | 1805–1880 MHz | 39.5 dBm (9W) | 2 dBm / 30 kHz (min) |
| PHS | 1880–1990 MHz | 39.5 dBm (9W) | 2 dBm / 30 kHz (min) |
| 3G | 2010–2145 MHz | 39 dBm (8W) | 2 dBm / 30 kHz (min) |
| 3G1 | 2110–2170 MHz | 39 dBm (8W) | 2 dBm / 30 kHz (min) |
| 4G1 | 2300–2390 MHz | 39 dBm (8W) | 2 dBm / 30 kHz (min) |
| 4G2 | 2500–2600 MHz | 39 dBm (8W) | 2 dBm / 30 kHz (min) |
| 5G | 2600–2690 MHz | 39 dBm (8W) | 2 dBm / 30 kHz (min) |
| WiFi 2.4G | 2400–2500 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |
| WiFi 5.2G | 5150–5300 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |
| WiFi 5.8G | 5725–5850 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |
| 5G1 | 3300–3500 MHz | 38.5 dBm (7W) | 2 dBm / 30 kHz (min) |
| 5G2 | 3500–3800 MHz | 38.5 dBm (7W) | 2 dBm / 30 kHz (min) |
| 5G3 | 4800–4960 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |
| VHF (optional) | 136–174 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |
| UHF (optional) | 400–470 MHz | 37 dBm (5W) | 2 dBm / 30 kHz (min) |