Components and connectors for company-wide audio-visual systems, as well as portable equipment for use on construction sites, are all included in electronics. Amplifiers, turntables, and stereo receivers are among the commercial stereo components, as are racks for mounting and cables for connecting. Digital voice recorders for taking notes on the jobsite, shortwave radios for AM/FM connection, and wireless Bluetooth speakers for high-quality audio in a variety of commercial and industrial settings are examples of portable electronics.