Spectra Precision HV101 Laser Package Includes. Spectra Precision HV101 Laser Key FEATURES and BENEFITS. Fully automatic self-leveling in both horizontal and vertical provides fast, accurate setup. Robust design withstands a 3 feet drop on concrete and still remains functional, reducing costs for downtime or repair. Multiple scanning angles and rotation speeds to match various conditions. Complete GC packages include everything you need for both interior and exterior work in a convenient system case. Rotor cage can be removed for exact beam spotting. Simple controls allow operators to carry out many functions with “one-touch” commands. Included Remote Control offers scanning, rotation speed, slope settings, and alignment control for fast one man setups.