Many educators have trouble figuring out how to deal with electronic devices in the classroom. Some schools have been educating students on the negative effects and encouraging them to regulate their use. Others even emphasized the possible applications of mobile devices in the classroom. Although, many people just try to ban everything. A principal in British Columbia raised the school ban to a new level by setting up a cell phone jammer. There is only one problem-the device is illegal in Canada. The principal has ordered Chinese equipment online, but some angry students soon found out and informed him that he was breaking the law. This idea is very important. Now, his condition looks terrible, and the use of mobile phones in school is now a civil rights issue for some students. https://www.perfectjammer.com/gps-blockers-jammers.html The drone jammer has three frequencies that can change the direction of the drone. You can select the direction by pressing one of the three frequency buttons. The barrel is equipped with antennas that emit signals that force the drone to return and land, thereby protecting the airspace. The buttstock is similar to the assault rifle of the M203 grenade launcher. It is designed with a center of gravity, which reduces fatigue during use and improves accuracy. In order to obtain more functions, the drone killer is also designed to accept optical sight attachments. Of all the drone jammers we have seen, this is definitely one of the most impressive. https://www.perfectjammer.com/wireless-wifi-bluetooth-jammers.html In civil and to the embassy, ​​nuclear power plants, oil depots, government buildings, museums and other important places UAV group defense, low-altitude defense and laser interception customs clearance system to achieve low-altitude drone) defense, you can also decorate and drive in civil airports The airport runway and the surrounding environment of various birds can also be parked on the civil aviation route of low-flying vehicles such as Heifei and other unmanned aerial vehicles (uav), showing great utility value. SD-10-Laser system has been invited to participate in the challenge of the Ministry of Public Security of the "Invisible Reconnaissance-2018" Unmanned Aircraft (uav) Unmanned Aircraft (uav) organized by the National Demonstration, Chongqing International Expo Security Intelligence Industry, and organized practical exercises Destruction of multiple rotor drones and fixed-wing drones and other activities at the scene has a significant effect in defending against attacks. It can be said that the laser removal system has become a "destroyer" of "low, slow, small" aircraft. Crucially, the laser has little collateral damage and can be effectively used in densely populated areas. https://www.perfectjammer.com/all-gsm-3g-jammers-blockers.html