DEM-331R

Description
The DEM-331T and DEM-331R bidirectional gigabit SFP transceivers (work in pairs) for single-mode optical cable are designed for installation in SFP (Small Form-Factor Pluggable) ports of network devices in order to receive and transmit data over fiber optic cable. These transceivers are made in a compact package and provide high-speed and reliable data transmission over long distances up to 20 km (DEM-331T/20KM and DEM-331R/20KM) or 40 km (DEM-331T/40KM and DEM-331R/40KM), and also ease of installation.
The DEM-331T/20KM and DEM-331R/20KM transceivers work in pairs. The DEM-331T/40KM and DEM-331R/40KM transceivers work in pairs.

The ideal solution for long distance applications
The DEM-331T and DEM-331R transceivers can be used to interconnect switches, servers and optical modules in educational networks or MAN (Metropolitan Area Network) networks. Providing data transmission over fiber optic cable up to 20 km (DEM-331T/20KM and DEM-331R/20KM) or 40 km (DEM-331T/40KM and DEM-331R/40KM), these transceivers provide operation with minimal signal distortion and without loss of performance on long optical communication channels.

Reliable data transfer
The DEM-331T and DEM-331R transceivers receive and transmit data over a single fiber using two different wavelengths. These transceivers are used in pairs. On one side, the transceiver uses one wavelength to transmit and a second wavelength to receive data. On the other side, the second transceiver works in reverse.

Compliance
The DEM-331T and DEM-331R transceivers use a standard simplex connector (LC connector) to connect fiber optic cable. They comply with industry standards and are compatible with D-Link gigabit switches. All D-Link transceivers are hot pluggable. Connecting the transceiver to a powered device will not cause any problems. This allows transceivers to be connected or disconnected without disrupting the rest of the network, facilitating maintenance and greatly reducing downtime.