Electronic wave blocking apparatus for data processing apparatus; Electronic wave absorbing apparatus for data processing apparatus; Multiport transceivers; Multiport electrical controllers; Wireless communication devices for voice, data or image transmission; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols; Devices for wireless high frequency radio transmission; Radio wave transmitting aerials; Metal cabinets specially adapted to protect telecommunications equipment in the nature of fiber optic cables; Electrical apparatus for testing the electrical conductivity of medical hydrogel electrodes; Electromagnetic wave breakers for electric audio and visual apparatus and instruments; Electromagnetic wave absorbing apparatus for electric audio and visual apparatus and instruments; Single-channel radio communication machines and apparatus for fixed stations; Wireless digital electronic apparatus to secure and protect data and images on all forms of wireless equipment including mobile telecommunications equipment using an automatic synchronization process and alarm notification of the loss or theft of the wireless equipment including mobile telecommunications equipment; Electronic test and measurement devices for use in the fields of networks and telecommunications, namely, instrumentation used to test and certify new and existing data and voice communication cable and coaxial cable; Testing apparatus for checking electronic devices; Testing devices for electronic parts; Electronic testing equipment, namely, telecommunication line integrity testing apparatus; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Wavemeters; Audio interfaces