What is the Alcatel SFP-10G-ER?
The Alcatel SFP-10G-ER is a SFP+ optical transceiver, listed by the manufacturer as "10 Gb optical transceiver (SFP+). Supports monomode fiber over 1550 nm wavelength (nominal) with an LC connector. Typical reach of 40 km.". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.