EM strip: 1) Compatible with 3M and Knogo EM (Electromagnetic) anti-theft systems 2) Rhoplex is an archival quality self-adhesive, meeting certain preservation standards 3) Easily sealed and available in various formats 4) Perfect for your bookstores, magazines, video and magnetic media 5) Resistant to damage or shielding that may otherwise prevent detection 6) Must make contact with the deactivation and reactivation 7) Light-weighted 8) Has a very high detection rate to prevent the thefts removing your products 9) Dimensions: 5 x 60mm 10) Color: white, black or custom colors 11) Material: iron and cobalt 12) Purpose: security protection 13) Application: circulating libraries, audio and video tapes EM chip: 1) Used in conjunction with EM (Electromagnetic) detection system 2) Available to METO, and other EM systems 3) Perfect for protect library or music and video products 4) Self adhesive 5) Suitable for all kinds of packaging or hard good including most metal products 6) Can be deactivated or reactivated at a max 7) Detection range over 7cm 8) Dimensions 12.5cm (5) 9) Color: white, black or other colors 10) Purpose: security protection 11) Application: retail stores, circulating libraries