CAR ALARM APPARATUS

A car alarm apparatus of the present invention includes a first horn provided in a car; a second horn provided in a place inaccessible from an outside of the car; an electrical source that supplies power to the first horn and the second horn; a theft detection section that detects an occurrence of a theft of the car; a horn switch that receives an operation of an operator; a first relay closed when the horn switch is operated; a first fuse connected to the electrical source in series with the first relay and the first horn; a second fuse connected to the electrical source separately from the first fuse; and a second relay connected to the electrical source in series with the second fuse and the second horn, wherein the second relay includes a first contact that connects the second horn to an electrical source through the first fuse and the first relay in parallel with the first horn and a second contact that connects the second horn to the electrical source through the second fuse, and closes the second contact when the occurrence of the theft is detected.