This is a Sharp Focus FTTH (Fiber to the Home) active optical node. It is used in cable television (CATV) networks to convert optical signals to high-quality RF signals for distribution in homes and commercial industries. 

• Model: Sharp Focus 110dB FTTH Active Node
• Wavelength Range: 1100nm - 1650nm
• Power Input: DC 12V
• Outputs: 2-way RF outputs
• Application: Networking / Commercial Industry

• Function: It is an optical receiver designed for the "Fiber to the Home" (FTTH) architecture, which brings a fiber optic cable directly to a residence. Its primary role is to convert incoming light signals from the fiber optic cable into electrical RF signals that standard coaxial cables and TV set-top boxes can use.