E3S-GS3E4 2M A Grooved-type Sensor That Doesn’tRequire Optical Axes Alignment.30 mm Sensing distance .Infrared LED 12 to 24 VDC ±10%. Load power supply voltage: 24 VDC max., Load current: 80 mA max. (residual voltage: 2 V max.); NPN voltage output; Light-ON/Dark-ON mode selector