CAT5e is the standard set to support data transmissions at frequencies up to 100 Mhz over 100 ohm twisted pair cable . Commonly used to support many Data applications.
Modules are tested to the BE EN 50173 standard which is harder to pass than the EIA/TIA standard which many others are tested to. Made from Flame retardant plastic compliant with UL94-V2 as required by Low Voltage Directive
Commonly used in floor boxes, The term LJ6C (also known as LJ6 or simply 6C) refers to the modules smaller dimensions;
LJ6C Module dimensions:
W 25mm x H 38.5mm x D19.5
This fits into a faceplate with hole dimensions of 22.3mm x36.7mm x 19mm