日本OMRON欧姆龙光电传感器E3X-NA1/E3NX-FA Product Category Sensors Fiber Sensors Fiber Amplifier E3X-ZV / MZV E3NX-CA E3NX-FA E3NX-MA E3X-HD E3X-SD / NA E32-L11FP / L1[]FS, E3X-DA[][]TG-S Fiber Amplifier Units Digital Display and Direct Key Setting Item Appearance Connection method Ratings and Specifications Model NPN output PNP output Standard models  Pre-wired (2 m) --- E3X-SD21 2M E3X-SD51 2M Wire-saving connector E3X-SD7 E3X-SD9*An Amplifier Unit Connector (sold separately) is required.