The Spectra Precision LL300S-X2-PRO is a complete professional-grade rotary laser package assembled for contractors and survey crews who work in fractional-inch measurements. Built around the proven LL300S red-beam rotary laser, this kit pairs the instrument with an HL450 machine control receiver, RC wireless remote, an inch-graduated grade rod, a heavy-duty tripod, and rechargeable battery packs — delivering every tool a grading team needs to get on grade faster and stay there all day.
Package Overview & Jobsite Applications
The LL300S-X2-PRO is engineered for high-productivity outdoor grading, site preparation, drainage layout, and foundation work. The inch-scaled rod graduations make this configuration the natural choice for crews whose workflows, client deliverables, and training programs are built around fractional-inch increments rather than metric or tenths-of-a-foot readings. Whether you are setting cut-and-fill stakes on a commercial pad or checking finish grade on a residential lot, this package provides the accuracy, range, and wireless control to keep the job moving.
Key Specifications
- Laser Class: Red-beam, Class IIIa (Class 3R)
- Self-Leveling Range: ±5° automatic compensator
- Grade Range: ±25% single-axis, ±10% dual-axis
- Operational Range: Up to 2,000 ft diameter with HL450 receiver
- Rotation Speed: 150, 300, or 600 RPM selectable
- Accuracy: ±1/16 in at 100 ft (±1.5 mm at 30 m)
- IP Rating: IP66 dust- and water-resistant housing
- Battery Life: Up to 100 hours with included rechargeable NiMH packs
- Rod Graduations: Inch / fractional-inch scale
What's in the Kit
- LL300S Rotary Laser: Self-leveling red-beam instrument with single- and dual-axis grade capability and wireless remote compatibility
- HL450 Laser Receiver: Long-range, dual-sided detector with audible and LED grade indicators for machine and hand-grade work
- RC Wireless Remote Control: Adjust rotation speed, grade settings, and scan mode from up to 300 ft away without leaving the machine
- Inch-Graduated Grade Rod: Contractor-length rod with fractional-inch markings for direct compatibility with standard U.S. measurement workflows
- Heavy-Duty Tripod: Aluminum construction with wide stance and quick-clamp legs for stable setup on rough terrain
- Rechargeable NiMH Battery Packs: Two packs included for all-day runtime; eliminate recurring alkaline battery costs on long shifts
- Padded Carry Case: Organized storage and transport protection for all kit components
Job Applications
Site Grading & Earthwork: Set and verify cut-and-fill elevations across large commercial pads, parking lots, and subdivision lots using the HL450 receiver mounted to a grade rod or machine mast.
Drainage & Slope Control: Use single- or dual-axis grade mode to establish precise positive drainage slopes on driveways, athletic fields, retention basins, and landscape grading projects.
Foundation Layout: Transfer and confirm finished floor and footing elevations with inch-scale accuracy, reducing re-work and keeping concrete pours on schedule.
Utility Trench & Pipe Grade: Mount the HL450 to a grade rod inside the trench to set consistent invert elevations for storm drain, sanitary sewer, and irrigation piping runs.
Compatible Accessories
- Spectra Precision HL450 Replacement Receiver
- RC Wireless Remote for LL300 Series
- Spectra Precision NiMH Rechargeable Battery Pack
- Heavy-Duty Aluminum Tripod
- Replacement Inch Grade Rod
- Spectra Precision LL300S Carrying Case
Related Guides
- How to Set Grade with a Rotary Laser Level
- Inches vs. Tenths: Choosing the Right Rod Graduation for Your Crew
- LL300S vs. LL300N: Which Spectra Laser Is Right for Your Project?
- Using a Wireless Remote to Speed Up Solo Laser Setup
Frequently Asked Questions
- What is the difference between the LL300S-X2-PRO and the LL300S-X1 package?
- Both packages are built around the same LL300S laser instrument. The X2-PRO differs by including an inch-graduated grade rod instead of a metric or tenths-scaled rod, making it the preferred configuration for U.S. contractors who measure in fractional inches. All other components — receiver, remote, tripod, and batteries — are equivalent across both packages.
- Can the LL300S set grade on two axes at the same time?
- Yes. The LL300S supports dual-axis grade mode, allowing you to dial in independent slope percentages on both the X and Y axes simultaneously. This is particularly useful for parking lot drainage design, athletic field crowning, and any application requiring compound slopes.
- How far does the RC wireless remote control work?
- The RC remote operates at a range of up to approximately 300 feet (90 meters) from the laser, allowing a single operator to adjust rotation speed, grade percentage, and scan angle from the rod location without walking back to the instrument.
- Is the LL300S-X2-PRO suitable for machine control applications?
- The included HL450 receiver is compatible with excavator and motor grader mast mounting for basic indicate-only machine applications. For fully automated blade or bucket control, a dedicated machine control system and compatible grade control receiver would be required. Contact Express Tools for guidance on upgrading to a full machine control solution.
