LOCKinPLUG is strong enough to keep plugs from falling out. Keep your loved ones safe from electrical shock. LOCKinPLUG permanently attach to any 2 or 3 prong plugs. Click-in Technology. Universal Plug Compatibility. Discrete Compact Design. Patented Design (Utility Patent). On-Demand Release. Prevents Accidental Unplug. White Color Matches Faceplates.