LWRD24GDM is a 24GHz short-range radar sensor module developed by Lexiwave Technology (Hong Kong) Ltd. aiming at object detection and distance measurement. With radar scanning, it could detect the existence, velocity and distance of the object. The module can operate at all weather and in all time due to the radar penetration into smoke, dust and fog. It is highly integrated in a small size with high sensitivity of a maximum detection range of 7 meters.