Theft-proof alarm device

An anti-thief warning device consists of a warning sensor, a central processing unit and an output unit. The output unit has two groups of output ends which are respectively consisted of two relays and related circuits of normally opened points. In idle mode, a relay coil is in an electricity loss and open position status; two groups of output normally opened points are disconnected. When warning signals appear, the output status of the CPU is inverted; the relay coil is electrifying, two groups of normally opened points close one by one. In the successively time difference, Two closing signals are output, the two normally opened points are respectively connected with a hand-free key and a retrial key of a fixed telephone or are connected with a one-key-dialing join operation or a retrial operation of a mobile phone, then the original set phone number will be dialed. The utility model has the beneficial effects of simple structure, easy production, sending and receiving warning signals with the present fixed telephone and cell phone.