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Long Distance 30-40m GSM Jammer Used In Public Places

S8-WG 8 Bands 3G 4GLTE GPS WiFi Cheap Jammer

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

$475.64 $999.14

Cell Phone Jammers 8 Bands Handheld 2G 3G 4G LOJACK

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

$350.99 $584.48

22 Antennas Full Bands Mobile Phone 5g Signal Jammers Wi-Fi GPS LOJACK Blockers

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.

$799.99 $1589.12

N8N Military Portable GPS WiFi Lojack Cheap Cell Phone Jammer

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

$563.28 $1150.69

gsm signal jammer prevents students from cheating

Teachers interrupted by students running classrooms use cell phones to distract others in class. Classroom distractions may be just what you need. With these devices, you can quickly end conversations, prevent students from cheating on exams, and prevent classroom interruptions from ringing and cell phone buzzing. If you are using a powerful portable GSM Jammer, you should place the antenna outside for better coverage and coverage. Another advantage of tunable cells is that they can be "tuned" to avoid blocking in adjacent areas.

The range varies, but for the most part, anyone who needs to make a phone call can get out of the classroom and make the call without disturbing others. In between emergencies or presentations, all signals are instantly restored by simply switching off the device. For a simple gsm signal jammer that disables student phones in small classrooms, you don't need an overly powerful gsm jammer. In a small space, you can use the mobile 30-40m GSM Jammer like a normal cell phone.