Water Level Switch/Contactless Liquid Level Detector/Outer Adhering Type Level Sensor PNP Output Interface Sensors Detector: Amazon.com: Industrial & Scientific
SENSOPART FT 25-R-PS-M4M IP69K Enclosure Rating, Proximity Sensor, 800 MM MAX Working Distance, PHOTOELECTRIC, Teach-in Adjustment, M8-4 PIN Metal Plug, PNP-Normally Open Output: Amazon.com: Industrial & Scientific
TRI-TRONICS EZPRC DIN Rail, RED LED, 45 MA, NPN/PNP Output, Light EMITTER, M12 Connector, Sensing Range Depends ON Optical Block, PHOTOELECTRIC Sensor, SMARTEYE EZ-PRO, 5-Wire, Polarity Protected, 1: Amazon.com: Industrial & Scientific
NTE Electronics NTE2512 PNP Silicon Complementary Transistor, High Frequency Video Output for HDTV, 80V, 0.5 Amp: Amazon.com: Industrial & Scientific
Amazon.com: Optocoupler Isolation Board, 24V To 3.3V 8-Channel Photoelectric Isolation Module Level Voltage Converter PNP Output PLC Signal
Amazon.com: Telemecanique XS Universal Series Inductive Proximity Sensor, Multi-Function, Plastic 117 x 40 x 40 mm Rectangular Body, 3-Wire DC PNP, PNP Input, NO/NC Output, Screw Term. w/ 1/2" NPT Cable Entry :