| 摘要 |
The present invention relates to an antitheft protection system for a self-service area. Said system includes at least one transmitting apparatus, set up at the boundary of the self-service area, and at least one protective housing that is capable of being connected in a locked manner with the item to be protected. Said housing comprises a means for interacting with the transmitting apparatus and an alarm means triggered by penetrating the housing within the transmission space of said apparatus. Said system is characterized in that the interaction means operates within the frequency band of less than 30 KHz in an encoded mode. |
