Welcome To Professional Signal Jammers Device Online Shop.

4G Signal Jamming Device Reviews

2G 3G 4G 5G phone signal and WIFI 2.4G 5.8G signal blocker


Very effective! Some weight for home use. The quality is very good and the price is very favorable. Next time you need to buy it again !!!

Read Product

The Latest Handheld High Power 4G Mobile Jammer


The price of this Jammer is really cheap compared to many other online stores, and the performance of the Jammer is also excellent! Really wonderful, especially the design of the optional jamming frequency bands. High recommended!

Read Product

World First 22 Antennas 5GLTE 2G 3G 4G Wi-Fi GPS LOJACK Blocker


I realized that JAMMER-MART is a very serious and reliable company that sells their products at an affordable price and uses the fastest shipping method in the world. I am HAPPY with the products I bought !!!!

Read Product

30W effectively shields 3 networks 2G 3G 4G 5G mobile jammer


I appreciate such a well-built product. It works exactly as advertised and the only reason I didn't give it 5 stars is because the side switches are a bit small. You have to use a pen or the tip of your fingernail to turn the different channels on or off, but this is a minor problem. Good product!

Read Product

Handheld GSM 3G 4G GPS Lojack WIFI Signal Jammers


This is a solid, well-built device offering much more coverage than expected. The side dip switches are nice to the touch because I don't always need to turn GPS blocking on and be able to turn it off.

Read Product

Portable Handheld LOJACK GPS WiFi RF Cell Phone Jammer


I am a very satisfied customer because they always answer my questions on time. Good product and good packaging. I will order from you again, thank you very much.

Read Product

6 Antennas Desktop GSM 3G 4G GPS WiFi UHF VHF Blocker


A very high power jammer capable of jamming a very large area. Can adjust the interference range, it is very convenient to use, I am satisfied.

Read Product

16 Antenans All Mobile Phone Frequency DCS PCS 315MHz UHF VHF GPS WIFI Jammer


I've been looking for this 16-wire jammer for a long time, I have found it now, and am very happy.

Read Product

14 Bands Adjustable More Frequencies Desktop Signal Jammer


I put it in the production workshop, and I no longer have to worry about employees playing mobile phones all the time.

Read Product

Desktop 6 Bands UHF VHF Frequency SM 3G 4G GPS WIFI Jammers


I really like this jammer. From there, I can enjoy peaceful life and privacy.

Read Product

CDMA GSM DCS PHS 3G 4G GPS WIFI Bluetooth Desktop Signal Jammers


I received the jammer and it even arrived two days earlier than expected. After testing, the effect is better than expected. The fan is a bit stronger than I thought, but I am satisfied with everything.

Read Product

3 Bands Mini Portable GSM 3G GPS Signal Jammers


Really outstanding equipment, it's free US delivery service. I bought a free shipping and I love it!

Read Product

5 Bands Adjustable CDMA GSM 3G 4G WIFI Frequency Blocker


This product is good, really useful, even more, and the communication with this company has always been very good, I would recommend this place and will buy it again in the future.

Read Product

Powerful All Mobile GPS Blocker GSM 3G 4G LTE WIFI Frequency Jammers


The product works as described and I am very happy with it.

Read Product

Latest 10 Bands Desktop Powerful GSM 3G 4G 5G Wifi Jammer


The desktop jammer provided by the seller is of good quality and can effectively block the above frequencies. I like it very much.

Read Product

Powerful Portable WiFi GPS 2G 3G 4G Jammers


I found that the jamming range can reach 20 meters. For me, it is enough to stop other people's mobile phones, very good product.

Read Product

8 Bands Armband Portable 2G 3G 4G WIFI 2.4G 5.8G GPS Jammers


From my purchase to the present, it has worked well and has a very wide coverage in some frequency bands (especially GPS).

Read Product

Portable GPS WIFI GSM 3G 4G Signal Jammers


According to the advertisement, a good mobile phone jammer works well. I bought one and used it for half a month, and it performed well!

Read Product

Latest Desktop Powerful WiFi GPS 2G 3G 4G 5G Jammers


This is a very good 5G jammer. I put my newly bought mobile phone there. There is no signal, which is very practical.

Read Product

Handheld CDMA GSM 3G 4G GPS WIFI Jammer


So far, its operation is really very good, I hope it will be as reliable as it is now !

Read Product

Adjustable Desktop 2G 3G 4G 5G GPS Wifi Signal Jammer


I bought it three months ago and put it in the office, the shielding effect is very satisfactory.

Read Product

Multiband Powerful GSM 3G 4G GPS WIFI Bluetooth Jammers


Very good product. It works great, the colors look nice and cool, I love it!

Read Product

Military 2G 3G 4G 433Mhz 315Mhz WiFi GPS LOJACK Signal Jammer


The shielding distance and jamming function of this high-performance desktop jammer is very strong, I really like this 12 antenna jammer !

Read Product