Drones jammers Aliexpress restricts cell phone reception
When the cell phone battery is activated at a gas station, the cell phone rings and generates enough energy to create a light spark. It will start a fire if it encounters flammable materials like petroleum in the air. As a result, we can see that there are explicit regulations for gas stations prohibiting the use of cell phones in gas stations. According to the principle, the devices at the gas station are controlled by a computer. The signal from the cell phone interferes with the normal operation of the device, which leads to the prohibition of measurement. More importantly, when the mobile phone sends or receives high frequency electromagnetic waves, high frequency currents flow inside. If the mobile phone has poor contact, the gas will burn, causing the gas station to explode. The use of the gas station drone jammer Aliexpress can limit the cell phone signal to 500M meters from the launch station. The shielding radius is adjustable and the coverage area is more than 30 square meters. The mobile phone within this range cannot make contact with the signal tower, so it can avoid the influence of the electromagnetic signal of the mobile phone signal on the petrol station to a certain extent. Jammer use indoors and outdoors. Desktop jammers use several antenna designs. It will be widely used not only by individuals but also in large places like prisons and courts.
After connecting the socket to the blue box on the wall in front of the classroom and turning on the switch on the left, the cell phone signals of the self-study students in the classroom quickly weakened and disappeared. When you call a student's cell phone, they see a voice prompt, "The number you dialed is disabled." After several tries, the box is on the wall of the classroom drone jammer Aliexpress. As for the two "black eyes", they should be of the same type as the "appearance" of the probe on the road.
