The Spectra Precision LR30 Laser Machine Display Receiver is designed to be used as a stand-alone display receiver on grading and excavating equipment including: dozers, backhoes, excavators, scrapers, skid steers, and levelers. The versatile, easy-to-use LR30 features 360-degree laser detection and works with all types of rotating lasers on all types of machinery for fast, no-hassle setup. Rugged and waterproof, the LR30 receiver withstands all weather environments. Internal isolating shock mounts protect the electronics. The LR30W is designed to work with the RD20 Remote Display.