MULTI-PURPOSE LASER: Grading, excavating and general construction projects are perfect applications for the RL-H5B. LONG RANGE WITH HIGH ACCURACY: Need to shoot elevations up to 400 m from your laser? No problem - this instrument has the power and range to cover a 400 m diameter job site. KIT COMPONENTS: includes the RL-H5B Laser, LS-80 Sensor, Sensor Holder, Batteries and Carry Case.