Stalker Radar, Applied Concepts announces a new line of direction-sensing speed displays, including its SpeedGuard trailer. Stalker speedboards can be placed anywhere to provide temporary or permanent speed control. Stalker’s patent-pending Direction Sensing Radar (DSR) only displays the speeds of approaching vehicles, and the speed reporting range can be adjusted to suit your specific requirements. Stalker’s SpeedGuard trailer also uses DSR radar to register speeds from one direction, as well as using a standard operational timer which can be set automatically to turn the SpeedGuard on and off at certain times. SpeedGuard is constructed with corrosion-resistant stainless steel, and has 24-inch numerals, the largest display available with a one-quarter-mile visibility.