M12 Connector Type Magnetic Hall Effect Proximity Switch Sensor NPN/PNP 4 Pins 5V/12V/24V Waterproof (IBEST) - China Hall Sensor Switch, Hall Effect Switch | Made-in-China.com
M12 4 Pin Connector Short Body Metal Position Detect Inductive Proximity Sensor Switch NPN PNP 5V/12V/24VDC Waterproof (IBEST) - China M12 Proximity Switch, M12 Connector Proximity Switch | Made-in-China.com
M12 Connector Type Magnetic Hall Effect Proximity Switch Sensor NPN/PNP 4 Pins 5V/12V/24V Waterproof (IBEST) - China Hall Sensor Switch, Hall Effect Switch | Made-in-China.com