Terminal blocks are modular, insulated blocks that secure two or more wires together. Terminal blocks consist of an insulating body and a clamping device. Their flexibility allows wiring to be centralized and makes it easier to maintain complex control circuits

PCB terminal blocks are modular, insulated devices that mount on printed circuit boards (PCBs) and secure two or more wires together. Some have integral pin terminals and mount through holes in the board. Others plug into PCB-mounted pin strips

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.

DIN rails and mounting hardware are used on computer boards. DIN is an acronym for Deutsche Institute fuer Normung, a German standardization body and member of ISO.

Eddy current proximity sensors and switches detect the proximity or presence of a target by sensing the magnetic fields generated by a reference coil.

Dataline and DC signal surge suppressors protect equipment from transient overvoltages present on data or DC signal lines.

Phototransistors are solid-state light detectors with internal gain that are used to provide analog or digital signals. They detect visible, ultraviolet and near-infrared light from a variety of sources and are more sensitive than photodiodes. This category includes photodarlingtons. 

Electronics standoffs and electronics ferrules are small components for spacing or positioning electronic devices on printed circuit boards.

Printed circuit board (PCB) fabrication services design and fabricate circuit boards. They differ from electronic manufacturing services, which populate and assemble boards. 

PCB pins and PCB receptacles are electronic interconnect devices for printed circuit boards (PCB). PCB pins are male connectors. PCB receptacles are female connectors

Remote terminal units (RTUs) connect directly to sensors, meters, dataloggers or process plants, and collect and transmit data automatically

PCB design and layout services providers generate schematics and CAD files for printed circuit boards

Patch panels are groups of ports used to connect lines between communications and electronic devices. Connections are made manually with small patch cords, and are easier to wire than automatic switches. Wireless patch panels are also available.

Solderless terminals are passive conductors used to facilitate a connection that is not soldered

Human machine interfaces (HMI) are operator interface terminals with which users interact in order to control other devices