These ground-fault sensors are used with current-monitoring relays to monitor the current running through a circuit to detect ground faults and protect sensitive electrical equipment and operators from injury.

These fiber-optic light sensors are used with arc-flash relays to monitor for arc flashing and send a signal to the relay to shut off power to protect low- and medium-voltage electrical assemblies from damage and operators from injury.

These liquid-level measurement probes are used with liquid-level monitoring relays to monitor fluid levels and detect changes in resistivity. They contact conductive fluids in tanks and vessels and are often used in mixing and filling applications.