There are many ways to achieve comfort and safety goals, and the device can detect potentially dangerous items. But what if people track with a mobile tracking device? In this case, the signal jammer can serve as a safety tool. There are detailed information on high-power mobile phone shielding machine. Many sites look for keywords on the Internet, such as cellphone jams.
The GSM jammers have the power shielding distance and shielding function. This smart jammer can block not only all 3G 4G signals, but also LoJack signals. It can block 3G, 4G, Wimax 4G LTE, and the shielding radius is up to 40m, depending on the signal strength of the specific area.