AutomationDirect’s OPT series of single and multi-fiber photoelectric amplifiers are available with wide detection and working ranges that support transparent object recognition capability. The DIN rail-mountable units are equipped with NPN or PNP, push-pull, light-on/dark-on selectable outputs, a bargraph signal-strength indicator, a red LED with visible spot, and key potentiometer or teach-in pushbutton for configuration; IO-Link communication is available on select units.
Available in four models, the OPT series fiber photoelectric amplifiers start at $79.00 and are IP50/IP65-rated. Also available are one-meter glass (starting at $98.00) and two-meter cuttable plastic (starting at $32.00) fiber optic cables for diffuse and through-beam modes.
See the full line of fiber optic sensors. 
About AutomationDirect:
In business since 1994, AutomationDirect is a distributor offering thousands of industrial automation products for electrical control systems, including PLCs, operator interfaces, AC drives, motors, stepper systems, sensors, motor controls, enclosures and more. Their prices are typically well below the list price of more traditional automation companies because of their business model and focus on efficiency and the majority of their products are stocked for fast shipping. Plus, get free two-day delivery on orders over $49; some limitations apply. For more information, contact them at 800-633-0405 or visit: www.automationdirect.com.
*Prices as of February 24, 2016. Check website for most current prices