Electronic devices, namely control consoles for building lighting, plumbing, heating ventilating and air conditioning (HVAC), elevators and escalators, thermostats, humidostats, electrostatic air filters; electronic communication devices, namely intercoms, two-way radios and pagers, and e-mail communicators, namely, two-way pagers, PDA's (Personal Digital Assistants) and web-enabled mobile telephones adapted for bidirectional wireless transmission of text messages, telephone private branch exchanges for handling voice and data transmissions; security devices, namely electronic locks, smoke and fire detectors, leak detectors, seismometers, motion detectors, cameras, infra-red person detectors, ID card and badge readers, biometric scanners and access controllers, metal detectors, and explosive-material detectors; personal computers and associated CRT, LED and plasma display monitors, disk drives, tape drives and printers; coin-operating vending machines and paper currency scanners