![PLC Connections: Comparing PNP and the Challenging NPN Type Sensors - Sensors Transducers - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key PLC Connections: Comparing PNP and the Challenging NPN Type Sensors - Sensors Transducers - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key](https://global.discourse-cdn.com/digikey/original/3X/2/1/21978631913a00117c408d9957aab554a1a678b6.png)
PLC Connections: Comparing PNP and the Challenging NPN Type Sensors - Sensors Transducers - Electronic Component and Engineering Solution Forum - TechForum │ Digi-Key
What is the difference between PNP and NPN when describing 3 wire connection of a sensor? | Schneider Electric USA
![M18 Inductive Proximity Sensor Switch Detection Distance 12mm DC 3-Wire PNP No/Nc - China Proximity Switch, Proximity Sensor Switch | Made-in-China.com M18 Inductive Proximity Sensor Switch Detection Distance 12mm DC 3-Wire PNP No/Nc - China Proximity Switch, Proximity Sensor Switch | Made-in-China.com](https://image.made-in-china.com/202f0j00HqLorTczIYbg/M18-Inductive-Proximity-Sensor-Switch-Detection-Distance-12mm-DC-3-Wire-PNP-No-Nc.jpg)
M18 Inductive Proximity Sensor Switch Detection Distance 12mm DC 3-Wire PNP No/Nc - China Proximity Switch, Proximity Sensor Switch | Made-in-China.com
![Waterproof Reflective Laser Photoelectric Switch Sensor Detector 20m Distance NPN PNP Output For Barrier Gate Alarm - AliExpress Waterproof Reflective Laser Photoelectric Switch Sensor Detector 20m Distance NPN PNP Output For Barrier Gate Alarm - AliExpress](https://ae01.alicdn.com/kf/Sfe852ebd4487413492652218a438f085V/Waterproof-Reflective-Laser-Photoelectric-Switch-Sensor-Detector-20m-Distance-NPN-PNP-Output-For-Barrier-Gate-Alarm.jpg)