OptoIso 3/4 adapter is a device that opto-isolates Mk3/4 controller inputs from external devices such as limit switches, proximity sensors, input switches, probes and similar devices.
Its main function is to protect the input circuitry of Mk3/4 controller from any damage that may occur due to improper wiring or power surges at the side of externally connected device. Also, using this adapter reduces electrical noise influence at controller inputs and makes up for easy connection of proximity switches.
PNP proximity sensor with OptoIso 3/4 adapter board and Mk3/4 controller. Splicing connector is included with adapter board.