The FG-ECS sense cable has a spliced junction with a length of 3.5 metres of jumper cable and an end termination. It detects the presence of water and base liquids at any point along its length. The FG-ECS sense cable is designed to be connected to analog alarms (FG-ALS8, FG-ALS4 & FG-A) or digital units (FG-NET, FG-BBOX & FG-SYS, via diversion box FG-DTCS). It detects and locates the leak when connected with locating units.

From 1^st July 2019, all FG-ECS cables are made in low smoke zero halogen (LSZH or LS0H) materials, it emits limited smoke and no halogen when exposed to high sources of heat.