Electronic anti-theft alarm

The utility model discloses an electronic anti-theft alarm, which is composed of a timing on-and-off device, conducting wires and a telephone. The conducting wires are connected with switches K1, K2 and K3, a motor under the timing on-and-off device and the telephone, and the K1 switch is installed on a door or a window; the edge of a disc on the timing on-and-off device has contact teeth. The utility model has the advantages of simple structure, low cost, safe power supply voltage, soundless and reliable alarm, etc. When used, when a robber enters the door or the window, the switch K1 is touched, the motor under the timing on-and-off device is started, the disc is driven to rotate, when the contact teeth switch on the switch K2, the hand free function of the telephone is started, when the contact teeth switch on the switch K3, the telephone dials out a preset telephone number to call polices.