Check the listing for details. IFS Optical Ethernet Receiver D7120 Interlogix GE Security. Condition: New. Listed at 199.99 USD. New International Fiber Systems D1720 optical ethernet transceiver. Box was opened for pictures. Please view pictures as part of your description. **Please feel free to ask any questions you may have. I will accept returns and my 100% rating is very important, if you feel the need to leave negative feedback please contact me beforehand, so we can discuss it. I'm sure we can come to an agreement.**Free shipping items returned WILL NOT receive a 100% refund for reasons unrelated to my listing, i.e. doesn't fit, changed mind, etc. Refund will be total paid by buyer - (minus) actual shipping cost I paid. **I describe my items for sale/bid the best that I can. I will never intentionally misrepresent anything I have listed. **USPS or Fed Ex shipping dependent on price. **Feedback is greatly appreciated.