The BAUMER ELECTRIC FPAM 18P3151/S14 is brass nickel plated retro reflective sensor with polarization filter and a pulsed red LED. This cylindrical sensor has a M12 connector with 4 pin and a wavelength of 660 ƞm with a maximum range of four meters. It has a voltage rating of 10 to 30 VDC and a current rating of 35 mA.