Photoelectrical single-key quick dialing alarm device for mobile phone

The utility model discloses an electronic long distance alarm device which comprises a mobile telephone. The utility model is characterized in that a single-key fast dialing conductive lead wire in a single-key fast dialing inner circuit of a working mobile telephone is connected to an inserting mouth of the working mobile telephone, and the inserting mouth can be connected with a photoconductive receiving device. When the photoconductive receiving device feels that a light source generates a change influence, a circuit of the photoconductive receiving device is switched on to switch on the single-key fast dialing circuit of the working mobile telephone. Numbers of the mobile telephone or a fixed telephone which is arranged in single-key fast dialing numbers in advance are dialed out for sending an alarm signal for people. The utility model has the advantages that the use function of the mobile telephone is enlarged, the mobile telephone and the photoconductive receiving device are combined, and the alarm signal can be sent towards a host. The electronic long distance alarm device is suitable for various theft prevention such as the theft prevention of a theftproof door, a theftproof lock, an automobile, a valuable device, a bank cashbox, etc. Additionally, the working mobile telephone has a single function and low cost. The electronic long distance alarm device also has the characteristic of photoelectric isolation.