Electric fences; Computer hardware and downloadable computer software for use in managing, monitoring, and analyzing geo-fences; Security devices for detecting premises intrusion, namely, premises security devices featuring virtual fences for monitoring security and safety of and preventing damage to premises by using radar, radio frequency, optical, thermal, acoustics; Counter-drone system comprised of computer hardware and recorded computer software for the detection, location, tracking, and jamming of radio communications of drones and their controllers; Drone countermeasures systems, namely, radio transmitters for use as radio frequency jamming devices, laser dazzlers, and directed energy weapons in the nature of infrared lasers capable of delivering significant thermal energy at a distance, high powered microwave and RF transmitters capable of disrupting radio receivers and other electronic devices, and visible lasers capable of temporarily and/or permanently disrupting optical sensors; Unmanned aerial system (UAS) defeat system in the nature of a counter-drone system composed of a multi-spectral avionic sensor system comprising radio frequency, acoustic, radar, and imagery sensors, electronic controllers for sensors, and electronic devices using cyber electromagnetic activity to detect, identify, and disable UAS in the nature of drones; Electronic devices for detecting and locating drones using radio frequency, optical, thermal, acoustics; Electronic wireless signal blockers used in security field, namely, electronic apparatus that inhibits the reception of wireless internet and UHF signals used in security field; Aeronautical radio communication machines and apparatus; Radios; Radar apparatus; Apparatus for transmission of communication; Ultrasonic transmitters; Electric surveillance installations; Security surveillance robots; Safety nets; Nets for accident prevention; Security alarms; Detectors for detecting metals, electronic devices, detonation devices, wiretaps, theft recording devices and contraband