Apparatus and instruments for conducting, switching, converting, storing, regulating and controlling electricity; sensors for doors, gates and elevators; radar sensors; radar opening pulse generators; electrical and optoelectrical testing, measuring, signaling, regulating, controlling, monitoring, switching, counting, data transmission and identification equipment and apparatus, electrical power supply equipment; inductive, capacitive, magnetic and optical-electrical sensors; pressure sensors, ultrasonic sensors and microwave sensors; optical reflectors; test equipment for sensors; mounting fittings for sensors; electrical control, measuring, signaling, regulating, controlling, monitoring, switching, counting and power supply devices and apparatus, in particular proximity sensors, proximity switches, slot initiators, ring initiators, speed measuring and monitoring devices, electronic switches, photoelectric switches, rotary pulse generators and timing devices; measuring, detection and monitoring instruments, devices and controllers, in particular ultrasonic sensors, ultrasonic detectors and ultrasonic transducers for non-contact level detection; data communication apparatus and equipment; portable telecommunications apparatus; telecommunications apparatus and instruments; wireless, wired or cabled communications equipment; cloud servers; intelligent gateways for communications; database engines; recorded data; software; databases; recorded media; application software; downloadable mobile applications for the transmission of information; software downloadable from the Internet; downloadable software applications for use with mobile devices; data storage devices; stored or downloadable software platforms; computer software platforms; system and system support software and firmware.