Surely every car driver has faced a situation when while driving in the neighboring row suddenly detected a car, although its approach in the mirrors was not noticed. The reason for this is the limited view, which cannot be excluded at all desire. Blind spot monitoring system helps to avoid an accident. The light bulb lights up when another car appears in the blind spot. Parktronic sensors, for example, start working at a close distance. Unlike them, here the sensor response is large - up to 3 meters. The kit contains two sensors, two signals, a control unit and connection wires. Such a system is useful for both novice drivers and experienced ones, because it is not always possible to notice a car in the blind spot.