Long Distance 20-30 Meters Blocker Device
This jammers can usually interfere with a variety of bands, Interference range up to 20-30 meters,covering all mobile phone signals, GPS signals, WIFI signals, walkie-talkie signals. And prices are usually cheap. So it's a very popular device. It is also by far the largest purchase of a jamming device,Not only desktop but also handheld, you can choose from various styles.
