The MILWAUKEE M18™ Horizontal Rotary Laser with ONE-KEY™ is designed for maximum leveling accuracy and durability on large-scale jobsites. Featuring a 600 m working range (with RD600 detector), ±5° automatic self-leveling, and IP66 protection, it performs reliably in harsh outdoor conditions. ONE-KEY™ integration offers tool tracking, remote lockout, accuracy reporting, and cloud inventory management. With over 40 hours of runtime on an M18 B2 battery, it provides long-lasting productivity for professional layout tasks.