Usable with other Spectra laser levels, the Spectra RC402N Remote Control allows the surveyor to make grade changes and start automatic alignments remotely which is time-saving and cost-efficient. It features a menu-driven user interface that simplifies grade entry and access to advanced features which reduces learning time and eliminates complex button sequences. The RC402N is compatible with several Spectra lasers including LL300S, HV302, GL412N, and GL422N.