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

Single board computers (SBC) serve as the motherboard for instrumentation systems including modern PCs. SBCs are composed of a microprocessor, memory chip, and serial and parallel interfaces to communicate with other devices

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.

Industrial computer motherboards are printed circuit boards (PCBs) that house basic computer circuitry and vital components. They are devices into which other boards or cards are plugged

Industrial backplanes are circuit boards that contain sockets or expansion slots for connections to other circuit boards. There two types of industrial backplanes: active and passive.

Specialized or proprietary products and accessories related to computer boards.

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.

USB connectors are used with universal serial bus (USB) ports. They can be used to connect USB products together, or to connect USB wires and peripherals to other standard port types.

Chipsets are single chips that provide many of the functions of a motherboard. Generally, they integrate the clock generator, bus controllers, system timer, interrupt controller, DMA controller, CMOS/RAM clock, and keyboard controller functions

Parallel industrial communications computer boards are boards or ports that transmit character data (byte) by sending the bits down parallel electrical paths simultaneously.

Card guides are attached to backplane motherboards to allow the insertion or mounting of computer cards

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