Current limiting diodes (CLD) regulate current over a wide voltage range.

Rotary limit switches use physically-actuated levers to rotate a shaft and operate the contacts in a switch, making them change state

Linear limit switches are electromechanical devices that require physical contact between a target object and switch activator to make the contacts change state

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

Diodes are electronic components that conduct electric current in only one direction, functioning as a one-way valve.

Diode arrays are composed of multiple discrete (usually unconnected) diodes on a single silicon chip.

pH and ORP controllers monitor and can control the pH (acidity or alkalinity) and/or the ORP (oxidation reduction potential) of liquids involved in a testing or process application.