Voltec 04-00104 12/3 STW 20 Amp Locking GFCI, 3-Foot, Blue with Yellow Stripe Manual Reset GFCI with Test Function If GFCI trips or is unplugged, the power indicator light goes off Twist Lock plugs and receptacles provide a level of security for devices that must not be unplugged accidentally UL listed and it carries the UL approval for Canada as well. Features a solid molded-on vinyl connector for high resistance to breakage and abuse