SC18SP-CE10 NPN NO+NC H, Capacitive sensor,AECO Capacitive Proximity Sensor, Plastic 18 mm diameter, 10-30 VDC, 4-wire, NPN, unshielded, 10 mm adjustable sensing distance, complementary (N.O. or N.C.) outputs, M12 quick-disconnect (purchase cable separately) **C18000076**