42 Technical consultancy and technical planning relating to power supply systems for electronic data processing rooms, electronic data processing racks, electronic data processing servers, and computers; technical consultancy and technical planning in relation to the installation of power supply cables, air supply cables, supply cables for cooling mediums, data lines, connection units, and standby battery supply equipment; technical consultancy and technical planning in relation to electronically based monitoring systems for rooms, temperatures, humidity and access control, control systems for computer centers, cooling systems for computer centers, control centers, measuring rooms and server rooms; technical consultancy and technical planning in relation to cooling systems for electronic data processing racks, server racks, air conditioning systems, ceiling-mounted cooling installations, and humidifiers; design services for others in the fields of electrical and electronic apparatus and instruments, monitoring and control instruments, electronic computer data processing racks, computer server racks, power supply systems, power supply cables, computer data lines, standby battery power supply equipment, electronic monitoring and access control systems for rooms for monitoring room temperature, room humidity and rooms access, electronic control systems for computer centers, cooling systems for computer centers, control centers, measuring rooms and server rooms, cooling systems and cooling supply systems for electronic data processing rooms, electronic data processing racks, electronic data processing servers, computers, and server racks; design services for others in the fields of air conditioning systems, ceiling-mounted cooling installations, humidifiers, dehumidifiers, electrical fans, and climate control and conditioning apparatus