Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and battery charging devices, specially adapted for use with handheld digital electronic devices; Casings and casing parts for electrical equipment, namely, housing for switching apparatus; Circuit boards; Computer hardware; Computer hardware and software system for remotely monitoring environmental conditions and controlling devices within a building, facility, grounds, or designated spatial area; Computer hardware and software system for tracking people, objects and pets using GPS data on a device on the tracked people, objects and pets; Computer programs for developing, debugging and testing software for microcontroller programming; Electric and electronic circuits; Electronic animal confinement unit comprising transmitters, electrical transformers, wires, and receiver collars; Electronic devices for animal locating and tracking programmed to use global positioning systems (GPS) and cellular communications; Electronic devices for locating and tracking lost articles, animals and assets using cellular communications; Electronic devices, namely, energy meters for tracking and monitoring energy usage; Microcontrollers; Portable and handheld digital electronic devices for recording, organizing, transmitting, manipulating, and reviewing text, data, image, and audio files; Protective carrying cases specially adapted for global positioning system (GPS) apparatus; Protective carrying cases specially adapted for personal digital assistants (PDA)