20-30 Meters Cell Phone Jammers

Here show the mobile phone jammers with 20-30 meters working radius range in jammer-buy.com. They are desktop and have a high heat dissipation so they can work for a long time.Can be used for the meeting room, office or a small theater.The interference of 20 to 30 meters radius can usually be satisfied we need interference, the scope of our home, classrooms, offices are to meet, this is our common need of the best interference range. Choose a purchase that you like.

Powerful Cell Phone Jammer UHF VHF Blocker and LoJack/433/315

High power signal jammers can block a variety of signal types, including all cell phone signals, which can be used in all large places with a radius of 70 meters.

Technical Specs: Weight:6kg Size:330x 238 x 60mm Warranty:One Year

$748.75 $1560.59

4 Antennas GSM/3G Jammer Unadjustable WIFI GPS Signal Blocker

The jamming frequencies of the 4 bands desktop jammer includes GSM,3G and GPS.It can deal with the A-GPS tracking to protect your privacy and be used in many places with the radius up to 30 meters.

Technical Specs: Radius:30m Weight:3.2kg Size:210 x 50 x170mm Warranty:One Year


5 Bands Cheap GPS/WiFi Jammer GSM 3G 4G LTE Blocker

This jammer can be used for WIFI,GSM,DCS,CDMA and 3G jamming.Of course ,there are other choices for you since it has 5 bands.With the high heat dissipation aluminum shell,it can work for a long time.

Technical Specs: Weight:2100g Size:210 X 195 X 53 mm Warranty:One Year

$305.89 $539.89

Adjustable Cell Phone Jammer for GSM/3G/4G Signals Portable WIFI/GPS Blocker

This desktop adjustable jammer is very general using in the class exam room,court,prison,etc to jam mobile phone signals,including GSM,3G,4G.In addition to that,jamming GPS,WIFI can also be of the functions it has.

Technical Specs: Radius:30m Output Power:10W Weight:2.9kg Size:250x106x33 mm Warranty:One Year

$328.89 $690.99

Related Tags :

Cell Phone Jammers

Phone interference is used in school, can stop the student class play mobile phone, don't listen to your lectures, can also prevent students cheating in the use of mobile phones, for students' learning and health are very good, I suggest that schools should be installed in the uniformly cell phone jammers.

1-10 meters  10-15 meters  15-20 meters   20-30 meters   30-50 meters   50-70 meters    100-200 meters

Recommended Tags:

Unmanned aerial vehicle (uav) has been used in the military in world war ii was put forward, with the development of science and technology, up to now, unmanned aerial vehicle (uav) has become an important air power, military uavs are excellent for army combat equipment, but the enemy forces, if there is no uav jammers, then they will face a severe losses.Communication is important for modern society, and if you don't want someone to be connected, you can use a portable cell phone jammer to block your phone's signal.Remote control is the items we all need to use many devices, remote control to control the corresponding items because it can control spectrum, to make remote control failure, have to interfere with its spectrum, also is to use remote control jammer.GSM jamming device that interfere with GSM signals provide you with a variety of styles and powerful functions.