The SICK WT12-P4181 is a photoelectric sensor with a PNP switching output, rated for 10 … 30 V DC supply and a maximum output current of 100 mA. Connection is via a male M12 4-pin connector, which is the standard quick-disconnect for photoelectric sensors in industrial automation — no hardwiring required, just plug and tighten. The supply range covers 24 V DC nominal, so it drops into existing 24 V control circuits without a separate regulator.
The M12 male connector makes panel integration straightforward: mates with standard M12 female cordsets, 4-pin, A-coded. The PNP output is sourcing — typical for SICK sensors feeding into PLC input modules that expect a positive-switched signal. The 100 mA output current drives small relays or indicator lamps directly, though for larger loads you'd buffer through an interposing relay.