OSP-SM10S Kramer Optical SFP Plus Transceiver Pair over 10G 1270/1330nm Simplex SM Fiber
Amazon.com: A Pair of 10G SFP+ Bidi Transceiver, LC Single-Mode Single Fiber Module, 10GBASE-BIDI 1270nm/1330nm for Cisco SFP-10G-BX20D-I/SFP-10G-BX20U-I, Ubiquiti UniFi, Mikrotik, and More, DOM, up to 20 km : Electronics