37 Installation, cleaning, repair and maintenance in connection with the following goods, namely measuring, signalling, inspecting, life-saving and teaching apparatus and teaching instruments, measuring apparatus and measuring instruments; installation, cleaning, repair and maintenance in connection with the following goods, namely apparatus for recording, transmitting or reproducing sound or images, transmitters and receivers for communication purposes, network communication apparatus; installation, cleaning, repair and maintenance in connection with the following goods, namely network management control apparatus, data communications apparatus, computer hardware for management of recorded content, databases and media content; installation, cleaning, repair and maintenance in connection with the following goods, namely information technology, audiovisual, multimedia and photographic apparatus; installation, cleaning, repair and maintenance in connection with the following goods, namely communications equipment, data storage devices and data storage media, replicating apparatus, data processing apparatus, and data processing equipment and accessories, both electrical and mechanical; installation, cleaning, repair and maintenance in connection with the following goods, namely audio/visual and photographic devices, signal cables for IT, AV and telecommunication, magnets, magnetisers and demagnetisers; installation, cleaning, repair and maintenance in connection with the following goods, namely scientific and laboratory devices for treatment using electricity; installation, cleaning, repair and maintenance in connection with the following goods, namely apparatus, instruments and cables for electricity, optical devices, enhancers and correctors; installation, cleaning, repair and maintenance in connection with the following goods, namely safety, security, protection and signalling devices, diving equipment, and navigation, guidance, tracking, targeting and map making devices; installation, cleaning, repair and maintenance in connection with the following goods, namely measuring, detecting, monitoring and controlling devices, scientific research and laboratory apparatus, educational apparatus and simulators, voltage regulators; installation, cleaning, repair and maintenance in connection with the following goods, namely apparatus and instruments for conducting, switching, transforming, accumulating, regulating and controlling electricity; installation, cleaning, repair and maintenance in connection with the following goods, namely controllers, transistor converters, power converters, in particular of a compact design, in particular for rail vehicles and vehicles for local public transport; installation, cleaning, repair and maintenance in connection with the following goods, namely electrotechnical and electromechanical components included in class 9, voltage converters, electrical transducers, direct current converters, rectifiers, current converters and electric inverters; installation, cleaning, repair and maintenance in connection with the following goods, namely idle converters, high-voltage transformers, electric measuring, signalling and inspecting apparatus and inspecting instruments; installation, cleaning, repair and maintenance in connection with the following goods, namely commutators, switches, electric, commutators for electrical components, microswitches, pressure switches, tumbler switches, lever switches; installation, cleaning, repair and maintenance in connection with the following goods, namely switching apparatus, relays, electrical switchgear and contactors, sensors, resistors, potentiometers, diodes, electrical and electronic components, included in class 9; installation, cleaning, repair and maintenance in connection with the following goods, namely electrical and electronic components, parts and assemblies for electric vehicles and rail vehicles, included in class 9; installation, cleaning, repair and maintenance in connection with the following goods, namely fuse boxes, fuses, grounding boxes, branch boxes, terminals, sleeves for electric cables, end caps and covers for electrical connectors, clamps for cables, plug-in connectors, plug-in connectors for electrical and electronic components; installation, cleaning, repair and maintenance in connection with the following goods, namely electric plugs, sockets and other contacts relating to electric connectors, contacts, electric, cable connectors, electrical terminal connectors; installation, cleaning, repair and maintenance in connection with the following goods, namely electrical control boards, protective hoses and dust covers for electrical apparatus and connectors, sirens, sirens for vehicles, radio beacons, beacon lights, warning lights, safety beacons; installation, cleaning, repair and maintenance in connection with the following goods, namely devices and apparatus for collecting, receiving, processing, displaying and representing data and information, switching, monitoring, control and regulating apparatus and devices, electric batteries and accumulators; installation, cleaning, repair and maintenance in connection with the following goods, namely parts and accessories for electric batteries and accumulators, chargers for electric accumulators and batteries, commutators, energy supply installations, battery chargers, and apparatus and systems for the distribution of energy; installation, cleaning, repair and maintenance in connection with the following goods, namely electrical, electronic, computer-based and processor-based controllers and control systems, power storage devices, programmable electronic controllers, panel meters, measuring and control apparatus, electronic controllers, fuse indicators, measuring devices, electric; installation, cleaning, repair and maintenance in connection with the following goods, namely instruments for surveying physical data, digital electric measuring apparatus, electronic instruments for measuring electrical parameters, measuring apparatus, electronic measuring apparatus, digital panel meters; installation, cleaning, repair and maintenance in connection with the following goods, namely electrical controls, shaft identification gauges, measuring instruments for power supply systems; installation, cleaning, repair and maintenance in connection with the following goods, namely transducers, electronic instruments for measuring process parameters, digital controllers, electrical voltage measurement instruments, measuring instruments for determining the values of electrical parameters, programmable controllers and measuring apparatus; installation, cleaning, repair and maintenance in connection with the following goods, namely data carriers for computers having software recorded thereon, logic master modules relating to software, software-programmable microprocessors, computer buses, computer add-on circuit boards, computer connection assemblies; installation, cleaning, repair and maintenance in connection with the following goods, namely oscilloscope attachments for converting computers into transient recorders; installation of electronic apparatus and electronic systems with integrated software; calibration services relating to electronic meters; operation, maintenance and development of cloud-based software applications; consultancy relating to the maintenance of power supply networks.