Speakers produce and transmit sounds carried by electrical or radio signals.  This product category is primarily for industrial and OEM speakers rather than those for home use

Industrial keyboards are peripheral hardware devices that include alphanumeric keys, electromechanical buttons, or sensors that users press to interface with a computer.  

Audible alarms provide an audible indication of a hazardous situation.

Bollards are structures used to protect buildings from vehicular impact, restrict access or serve as landscape enhancement.

Impedance matching networks are electrical circuits which, when connected between two networks, match the output impedance of the source (the first network) to the input impedance of the load (the receiving or second network). The purpose of matching these two impedances is to minimize wave reflection and/or to maximize the transfer of power between the system and the load.

Audio headphones are small speakers worn over the ears to isolate sounds for the listener

Stands and supports are used to hold a piece of equipment at an elevated position. This product area represents a large range of products - from heavy-duty industrial jack stands to light-weight, easily-adjustable camera and speaker stands

Electrical connectors are devices that join electrical circuits together. Male connectors plug into receptacles, jacks, and outlets. Female connectors contain sockets to receive other devices.

Specialized audio equipment is used in specific industries such as the recording industry, and for specialized applications such as voice digitizing and analysis.

Audio amplifiers and preamplifiers are units that amplify a sound signal, which is then sent to a speaker or another amplifier

Patch cables and cords are flexible cables that are terminated at both ends with a plug and used to interconnect circuits on patch panels.

Electrical coil winding machines are used to wind coils for motors, transformers, inductors and chokes.

Audio connectors are used to affix cables to other audio equipment, providing electronic signal transference and grounding protection.

CRT monitors use cathode ray tube technology to display output from a computer.

Desktop personal computers (PCs) are small, relatively inexpensive computers that are designed for individual users. Typically, these devices include a monitor, keyboard, mouse, and other peripherals.