Omron E2K-C25MY1 capacitive proximity sensor: 34 mm cylindrical, 25 mm max sensing distance, two-wire SCR NO output, 90-250 V AC supply. IP66, NEMA 1/4/12/13 rated, adjustable sensitivity, 2 m prewired cable.
Picking the right variant
Need normally-closed logic? Use the E2K-C25MY2 -- same specs except contact form. For DC applications with NPN output, the E2KC25ME1 has a 10-30 V DC supply and same 25 mm range.
Wiring and installation
Connect one wire to AC line (90-250 V AC) and the other to the load (up to 200 mA). The sensor switches the load when it detects material within the adjustable 25 mm range.