Stalker Pro ll + [811-0006-00] Radar Gun Wireless LED Display Board Package W/ 3.5 Digit LED Speed Sign Be in the game without being in the way. The new Stalker Pro II+ adds a new, faster processor and provides wireless connectivity to scoreboards, speed signs, mobile applications, and your own proprietary programs. Wireless streaming of velocity readings to stadium scoreboards and LED speed signs bring a new level of technology and excitement to the game. And, as mobile applications develop, the future of velocity capture and video imaging rests in the palm of your hand.