New High Power Handheld 12 Antennas 5G Cellphone Signal Jammer With Nylon Cover, Blocking 2G 3G 4G 5G Wi-Fi GPS UHF VHF, 37 Watts Jamming up to 40m.
This device is suitable for classroom, meeting room, library, movie theater and other places where need to keep quiet. Due to its small size and easy to hide, the device is popular with teachers and administrators. As the most popular portable mobile phone jammer, this product has a small size, easy to carry. Can block 8 frequencies, and have a very large jamming range. With a separate frequency control switch, you can select the frequency range that needs to be disturbed as needed. With car charger, can charge the battery in the car
The most popular 16-band5g jammer in 2021 can interrupt two signals at the same time, and can shield up to 25m. It is portable and can be easily adapted to multiple occasions.
This is the newly designed 22-antenna 5G jammer. It can not only cut off all 5G 3G 4G mobile phone signals, but also block Wi-Fi 2.4G / 5GHz GPS LOJACK, RF 315 MHz 433MHz and other signals, output power 42 watts, with infrared The remote control turns on/off the power.
This is a new 8-band portable military diy cell phone signal jammer. It has a very large jamming range. It can be hung from the arm and is very portable. With a separate control button, you can choose the frequency band you want to jam. It easy to carry, Pocket-size, Hang or wear on the arm or belt. Has power , Can shield all common phone signal around radius 5-40m. Each band can work separately or simultaneously with switch to turn ON/OFF
This is the first mobile phone jammer that can interfere with higher WIFI frequencies operating in the 5GHz spectrum, with a shielding distance of up to 40 meters.
This is one of the most cost-effective cell phones jammers available. Has a very . It can jamming 3g, 4g, WiFi, GPS and other signal. Hidden output power adjustable switch design, a Good Quality Multi-functional WIFI 2.4G 5G and Cellphone 3G 4G Jammer, Adjustable and Built-in 3 Cooling Fan to support non-stop working
This 8 Bands Portable mobile phone frequency jammer,can jamming all types of Android phones, Tablets, Smart Phones, iPhones, Windows phones etc. that use 2G, 3G, 4G, GPS L1-L5, LOJACK, or Remote Control 315Mhz 433MHz and Bluetooth WIFI wireless signals popular in 2019 and in years to come, build-in Ni-Mh battery 4700mAH working 1.5 Hours
This desktop 3G 4G cell phone signal blocker device has a very good heat dissipation, with two cooling fans, can work all day long. Use of high hardness black aluminum shell, improve product heat dissipation. On both sides of the inlet, the outlet symmetrical layout of the formation of convection, two silent fans will heat out to ensure that the host work stable
This 6 bands mobile phone signal blocker can jam al cell phone signal: 2G, 3G, 4G, WiFi, GPS. Is the best choice for school, the examination room, office. Can be isolated from the signal to ensure information security. Apply to all kinds of examination room, gas stations, churches, courts, libraries, conference centers, theaters, hospitals, military power and other places prohibit the use of mobile phones
This is the latest cell phone blocker for business. Designed for the latest 5.8G signals. It can effectively jamming 5.8G and other cell phone signals. In addition to mobile phone signals, the device can also block GPS, WiFi and other signals. 18W power , jamming range up to 40 meters. Is a very cost-effective jamming device
Cell phone signal jammer appear during exam season
Fraud has occurred in all examinations in the past dynasties. With the development of technology, more and more people use mobile phones to cheat. It has become an issue that the education sector pays more and more attention to. In order to ensure the information security of the examination room, some ordinary colleges and universities generally use mobile cell phone jammer to interfere with external signals within a certain range. Today we will talk to you about how the school's Cheap 20-30M Cell Phone Signal Jammer interferes with mobile phone signals.