Jancosta 24 Hour Video Surveillance Sticker Decals, Security Warning Sign for Business and Home, Indoor and Outdoor (5.5x5.5" Pack of 4) 1. Durability: the Best German UV Print Tech-graphics and wordings will stand 1-3 years. 2. High Visibility: vibrant color oil ensures the sign to catch the attention possible intruders. 3. Robust Glue: extra thick 3M adhesive offers a firm stick on walls and windows.