Infrared remote-controlled burglar alarm for motor-vehicle

The utility model provides an infrared remote-controlled burglar alarm for automobiles, composed of a transmitting part which is composed of a coding circuit carried by a driver and an infrared transmitting circuit, a receiving part which is composed of an infrared receiving amplifying circuit installed in a driving chamber and a decoding circuit, and a control executive part which is mainly composed of a tristate logic control circuit and a vibration shifting alarm circuit. The transmitting part, the receiving part and the control executive part are respectively connected with an automobile ignition circuit, an electric automobile door lock and switches under the seat of a driver and in a baggage case. After the driver kills the engine and gets out of the automobile, the utility model can automatically enter the state of the alert, such as, when a robber gets on the automobile and ignites to start or drag the automobile, the audible and visual alarm can be totally sent out. The utility model has the advantages of reliable use, long life time, and anti-interference.