Autonics
PRCM30-15DN
Inductive Proximity Sensor, 15mm Sensing, M30 RounNon-Shielded, NPN NO, 3 Wire Connector, 10-30VDC
Alt: PR Series
Inductive Proximity Sensor, Ø30mm, 15mm Range, NPN NO, 3-Wire, 12-24VDC
If you are looking for a cost-effective inductive proximity switch, look no further!
The PR series is IP67 and available in 8mm (PR08), 12mm (PR12), 18mm (PR18) and 30mm PR30). They are also available in DC 2-wire, DC 3-wire and AC 2-wire.
Most of these sensors can ship in 1 to 2 days!