Omron E3Z-T61 THRU BEAM NPN Photoelectric Sensor Seperate Send and Receive, Sensing method: Through-beam, ... Sensing distance: Omron E3Z-T61 THRU BEAM NPN Photoelectric Sensor E3ZSeperate Send and Receive,Sensing method: Through-beam ... 10% (ripple(p-p) :10% Max.),Control output (Output type) NPN open collector output,Operation mode: Light-ON/Dark-ON selectable ...