LDTR04plus is an integrated microstrip antenna, radio frequency circuit and signal processing circuit of the full import scheme speed detection radar module, direct output target speed information. It can be used for long-distance vehicle speed measurement over 150 meters. Integrated RF chip with integrated phase-locked loop has high frequency stability and speed measurement accuracy up to 1KM/h. Colour:As Shown Material:plastic+metal Package Contents: 1 x Radar module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.