Versatile, pocket-sized combination lock and security cable. Simple to use, difficult for thieves to disarm. Easily attaches to your carrying case or most notebook computers with a security lock slot. Self-retracting, cut resistant stainless steel cable (24 in). Siren activated when cable is severed or when the motion sensor is armed and triggered. LED indicator light displays alarm status. Resettable 4 digit lock (up to 10,000 combinations). Suitable for indoor and outdoor use. Secure battery cover which can only be opened when unit is unlocked. Combination can be set to users own personal code.