(fencing) A device used in electric powered fencing to detect irrespective of whether a weapon has struck an opponent, which connects into a fencer's weapon by a spool and body wire. It employs lights and sound to notify a success, with distinctive coloured lights for on goal and off focus https://gabletoppak.com/lakes-developed-under-smart-cities-initiative-in-coimbatore-turn-dumping-grounds-for-plastic-waste/