Full-band K-16-120W Classsroom Cell Phone Jammer for Anti-cheating&Distraction-free
Are you still worried about how to prevent cheating in exams? Our Classroom Cell Phone Jammer discreetly blocks 5G and Wi-Fi signals within a 10–50 meter range, which is the nemesis of wireless cheating devices such as mobile phones, Wi-Fi, Bluetooth, and electronic watches. It serves as a security guard and purification expert in the confidential meetings and standardized examination venues.

The jammer is an omnidirectional full-band communication signal disruptor, all of which are seventh-generation green signal jammers. It adopts an aluminum alloy casing and has fast heat dissipation. The military-grade anti-drop and anti-collision design has powerful performance.
It combines the advantages of portable and desktop jammers, and has the characteristics of easy portability and high-power interference. The total power of 120W can quickly and effectively eliminate signal threats within the interference range. But they only block the reception of on-site mobile phone jamming devices and do not affect surrounding base stations at all.
With its unique and discreet design, this classroom cell phone jammer is ideal for indoor environments like classrooms and conference rooms where blocking cellphone or Wi-Fi signals is essential.




Precautions:

FAQS About Cell Phone Jammers
1. What is a cell phone jammer?
A cell phone jammer is a device that disrupts or blocks mobile phone signals in a specific area. This technology can prevent phones from making or receiving calls, sending texts, or using mobile data within its range. They are commonly used in places where distraction-free environments are needed, like theaters, classrooms, or certain secure facilities.
2. How do cell phone jammers work?
Cell phone jammers work by emitting radiofrequency signals that overpower the signals from cell towers to mobile devices. When a cell phone attempts to connect to the network, the jammer prevents it from establishing a handshake with the tower, effectively blocking any communication in the designated area.
3. Can I block cell phone signals in my house?
It is illeagal to use jammers in many places, but you can block cell phone signlas with these alternative measures:
A.Building materials like thick concrete, metal, or even specially coated walls.
B.Setting up a Faraday cage.
C. Signal control solutions like home network extenders or boosters.
4. Do cell phone jammers really work?
Yes, they can block the connection between the mobile phone and base stations, causing all the phone “No Service” or “Searching”. They are widely used in the seetings where the phone signals are prohibited like various exams, prisons.
5. Can cell phone jammers be detected?
Yes, cell phone jammers can often be detected, particularly in controlled or monitored areas. The detector can identify the location of jammers and some advanced detector can even identify the interference reall-time.
6. Are cell phone jammers legal?
The legality of cell phone jammers varies by country. In many places, such as the United States, it is illegal for individuals to use, sell, or operate these devices because they can interfere with emergency services. Always check local laws and regulations before considering the use of a jammer.
7. How far can a cell phone jammer reach?
About 100M(dependig on the strength of base station signals). They only block signals from on-site wireless devices without causing any interference to surrounding base stations.
8. What are the main uses for cell phone jammers?
Cell phone jammers are used in various scenarios, including educational institutions to minimize distractions during lectures, in movie theaters to enhance viewing experiences, and in sensitive areas like military bases or government buildings to prevent unauthorized communication. However, their use should comply with local regulations.
9. Can cell phone jammers affect other devices?
Yes, cell phone jammers can potentially interfere with other wireless devices that operate on similar frequencies, such as Wi-Fi networks, Bluetooth devices, or even some medical equipment. This unintended interference can lead to disruptions in communication and operation, making careful consideration essential.
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) |