Ensure that people park safely and where they should with this Flashing LED Light Parking Safety Sensor. The flashing light signals when a car's bumper has touched the pole. Weighted base keeps the sign in position and the sensor features an adjustable design so the height can be customized to any vehicle. Box includes 4 sections and a weighted base. Unit uses 2 x AG-13 button cell batteries which are included. Sign measures 5" x 5" and stands 45" tall. Comes packaged in an individual box. Box measures approximately 8.75" x 2.5" x 9.5".