The RD20 links directly with the new family of wireless receivers: LR30W, LR50W and LR60W. The Spectra Precision® RD20 wireless in-cab remote display can quickly and easily be positioned in the cab, without cables, to improve visibility of the receiver grade information. Additionally, most receiver functions can now be controlled in the cab with the remote. Features & Benefits Large, bright, Red, Green and Blue elevation LEDs for High On-grade and Loud audible bleeper
