Motor vehicle theft detection device

A motor vehicle theft detection system for preventing the theft of one or more motor vehicles from an owner, comprising:

• a plurality of motor vehicles;
• a plurality of distinct transmitters, wherein each transmitter is mounted inside each of the motor vehicles and has a unique signal;
• a receiver for separately monitoring and detecting the unique signals from each of the transmitters and assuring that each unique signal exceeds a threshold level, and for visually and audibly indicating when one of the unique signals is not detected above the threshold level which indicates that the transmitter has exceeded the acceptable distance, wherein the receiver has distinct visual indicators for each of the transmitters that notify the owner which of the transmitters has exceeded a predetermined acceptable distance from the receiver, and wherein the owner can separately set the acceptable distance for each transmitter;
• wherein said each transmitter transmits its unique signal at a constant interval;
• wherein the acceptable distance for each transmitter is set by a distinct sensitivity control which determines the threshold beneath which the unique signal from that transmitter will not be detected;
• and
• wherein said each transmitter is attached to an existing car alarm.