Book burglar alarm, also known as book burglar alarm and book monitor, is mainly used at the exit of libraries and bookstores. It consists of one channel, two channels or more channels, but it has only one purpose, that is, to let readers walk out of the bookstore through the channels and check the magnetic stripe in the books by electromagnetic principle. If a reader takes the book out of the bookstore without degaussing by the staff, when he walks to the aisle, the burglar alarm will sound to remind customers not to forget to go through the formalities. This is the most basic principle of book burglar alarm. Longkou Huangcheng Innovation Wireless Power Plant provides you with the most advanced multifunctional book burglar alarm, ordinary book burglar alarm, magnetic stripe and other supporting equipment. Electricity, word: 0535,8952,523. Mobile phone:1379,258, 1 168. Ball numbers: one two zero, seven three zero, seven one nine.