DragonFly® SA PASS The DragonFly SA PASS (Personal Alert Safety System) from MSA that complies fully with NFPA-1982, 1998 Edition--a standard that requires stand-alone PASS devices to activate automatically. In addition, the standard requires two jumps into pre-alarm volume and a two-step deactivation. A specially designed tethered key attaches to a jump seat, locker or vehicle interior. When the wearer leaves for the hazardous area, the key snaps off, activating the DragonFly SA PASS.