(fencing) A Device Employed in electrical fencing to detect whether or not a weapon has struck an opponent, which connects to your fencer's weapon by a spool and body wire. It works by using lights and sound to inform a hit, with diverse coloured lights for on target and off https://gabletoppak.com/from-plastic-bottles-to-gabletop-cartons-a-step-toward-solving-the-plastic-pollution-crisis/