The Spectra Precision LL300N-X2PRO is a fully loaded rotating laser package built for professional contractors, excavators, and site supervisors who need accurate, reliable grade control right out of the box. Centered on the field-proven LL300N self-leveling rotating laser, this kit ships with every accessory you need to get on-grade and stay there — the HL450 digital grade rod receiver, RC402N wireless remote control, a professional tenths rod, heavy-duty tripod, and a rechargeable battery system. No separate purchases, no downtime hunting for accessories — just unbox and work.
Package Overview & Jobsite Applications
The LL300N-X2PRO is engineered for the full range of general construction elevation tasks. Whether you're cutting a building pad, setting drain slopes, grading a parking lot, or checking foundation elevations, the LL300N's ±1/16" accuracy at 100 ft and 2,000 ft diameter working range give you the performance to work efficiently across large sites. The self-leveling system compensates automatically within a ±5° range, so setup on uneven ground stays fast. The HL450 receiver's digital numeric display confirms exact grade offset in the field, eliminating guesswork when you're away from the instrument.
Key Specifications
- Accuracy: ±1/16" at 100 ft (1.5mm at 30m)
- Self-Leveling Range: ±5°
- Working Diameter: Up to 2,000 ft (610m)
- Rotation Speed: 100, 300, or 600 RPM selectable
- Grade Capability: Single-axis grade mode up to ±25%
- IP Rating: IP66 — dust-tight and water jet resistant
- Battery Life: Up to 100 hours on rechargeable NiMH pack
- Remote Range: RC402N up to 200 ft line-of-sight
- Receiver Detection Window: HL450 — 2.75" detection window with numeric offset display
What's in the Kit
- Spectra Precision LL300N — self-leveling single-axis grade rotating laser
- HL450 Digital Receiver — large numeric display shows grade offset in 0.1" increments
- RC402N Wireless Remote Control — adjust grade, rotation speed, and on/off from up to 200 ft away
- Professional Tenths Grade Rod — calibrated in 0.01 ft increments for precision elevation reading
- Heavy-Duty Tripod — aluminum, adjustable height, stable on rough terrain
- Rechargeable Battery System — NiMH pack with charger included
- Carrying Case — molded protective case for laser and accessories
Job Applications
Site Grading & Excavation: Set your LL300N at a known benchmark, dial in target grade with the RC402N from your cab, and let your operator work independently using the HL450 clipped to the blade or rod — no grade checker required on every cut.
Foundation Layout & Pad Work: Achieve consistent slab elevations across large pours. The HL450's numeric offset readout lets your form crew confirm grade to the nearest tenth without returning to the instrument.
Drainage & Utility Slopes: Use single-axis grade mode to set precise positive or negative slopes for swales, storm drain runs, and utility trenches up to ±25% grade.
General Building Construction: Transfer elevations, set batter boards, check floor flatness, and establish finished floor benchmarks across multi-trade jobsites with a single versatile instrument.
Compatible Accessories
- Spectra Precision HL450 Replacement Receiver
- RC402N Wireless Remote Control (Replacement)
- Spectra Precision NiMH Rechargeable Battery Pack
- Heavy-Duty Laser Tripod (Replacement)
- Spectra Precision Grade Rod — Tenths
- Machine Control Mast & Bracket Kit
Related Guides
- How to Set Up a Rotating Laser Level on a Construction Site
- Using the HL450 Receiver for Grade Checking
- Rotating Laser vs. Pipe Laser — Which Do You Need?
- Spectra Precision LL300N vs. LL400HV — Comparison Guide
Frequently Asked Questions
- Does the LL300N-X2PRO work for machine control applications?
- The LL300N can be used with grade-checking receivers mounted on a mast for basic machine guidance on motor graders and dozers, but it is not a full machine control system. For automated blade control, you would need a dedicated machine control laser and compatible aftermarket or OEM system. This package is best suited for manual grade checking and layout work.
- What is the difference between the X2PRO and the standard X2 package?
- The X2PRO package upgrades the standard X2 kit by including a professional tenths grade rod and a heavy-duty adjustable tripod, giving you a fully field-ready system without any additional purchases. The laser, receiver, and remote are identical between the two packages.
- How does the HL450 receiver display grade offset?
- The HL450 features a large alphanumeric LCD display that shows your exact distance above or below laser grade in 0.1-inch (or millimeter) increments. This allows rod persons or machine operators to read exact cut-and-fill information without interpreting light bar positions alone, significantly reducing grade errors on fast-moving sites.
- Is the LL300N waterproof enough for outdoor jobsite use?
- Yes. The LL300N carries an IP66 ingress protection rating, meaning it is fully protected against dust intrusion and high-pressure water jets. It is designed to operate in rain and dusty excavation environments. However, like all precision optical instruments, it should be stored in its case when not in active use and kept out of standing water or submersion situations.
Frequently Asked Questions
Does the LL300N-X2PRO work for machine control applications?
The LL300N can be used with grade-checking receivers mounted on a mast for basic machine guidance on motor graders and dozers, but it is not a full machine control system. For automated blade control, you would need a dedicated machine control laser and compatible aftermarket or OEM system. This package is best suited for manual grade checking and layout work.
What is the difference between the X2PRO and the standard X2 package?
The X2PRO package upgrades the standard X2 kit by including a professional tenths grade rod and a heavy-duty adjustable tripod, giving you a fully field-ready system without any additional purchases. The laser, receiver, and remote are identical between the two packages.
How does the HL450 receiver display grade offset?
The HL450 features a large alphanumeric LCD display that shows your exact distance above or below laser grade in 0.1-inch (or millimeter) increments. This allows rod persons or machine operators to read exact cut-and-fill information without interpreting light bar positions alone, significantly reducing grade errors on fast-moving sites.
Is the LL300N waterproof enough for outdoor jobsite use?
Yes. The LL300N carries an IP66 ingress protection rating, meaning it is fully protected against dust intrusion and high-pressure water jets. It is designed to operate in rain and dusty excavation environments. However, like all precision optical instruments, it should be stored in its case when not in active use and kept out of standing water or submersion situations.
