The Spectra Precision LL300S-X1-PRO is a complete, job-ready rotary laser package engineered for contractors who demand accuracy, speed, and remote-operated control across demanding grade work. By pairing the proven LL300S single-slope laser platform with the highly responsive HL450 receiver, wireless remote, tenths rod, heavy-duty tripod, and rechargeable battery system, this kit eliminates the need to source individual components—so you're operational from the first morning on site.
Package Overview & Jobsite Applications
Designed for earthwork, concrete flatwork, irrigation grading, and site prep, the LL300S-X1-PRO streamlines two-person crew workflows. The wireless remote control lets the instrument operator adjust slope settings and laser elevation from up to 200 feet away, reducing the constant back-and-forth repositioning that bleeds time on dense or active jobsites. The HL450 receiver's extended detection range—up to 2,600 feet in diameter—keeps grade checks accurate even in bright outdoor conditions where a naked beam is invisible.
Key Specifications
- Laser Class: Class IIIa / Class 3R, red beam
- Slope Range: 0–25% single axis
- Self-Leveling Range: ±5° automatic
- Working Diameter: Up to 2,600 ft (800 m) with HL450 receiver
- Accuracy: ±1/16 in at 100 ft (1.5 mm at 30 m)
- Remote Control Range: Up to 200 ft (60 m)
- Battery Runtime: Up to 100 hours (rechargeable NiMH pack included)
- IP Rating: Dustproof and waterproof construction for outdoor use
- Rotation Speed: 100, 300, or 600 RPM selectable
What's in the Kit
- LL300S Rotary Laser: Single-slope red-beam transmitter with remote-compatible control output
- HL450 Laser Receiver: Extended-range digital readout receiver with audible and visual grade indicators
- Wireless Remote Control: Full instrument control—slope, elevation, and rotation speed—from up to 200 ft
- Tenths Rod: Graduated grade rod calibrated in tenths of a foot for precise elevation referencing
- Heavy-Duty Tripod: Aluminum contractor-grade tripod with wide stance for stable instrument mounting
- Rechargeable Battery Pack & Charger: NiMH rechargeable system with up to 100-hour runtime
- Carrying Case: Molded hard case for protected transport and organized storage
Job Applications
Site Grading & Earthwork: Set and hold precise single-axis slope grades for drainage swales, parking lots, and cut-and-fill operations. The remote lets one operator run both the laser and grade checks without a second crew member at the instrument.
Concrete Flatwork: Establish accurate elevation control for slabs, footings, and formed pours. The HL450's fine-increment digital display resolves grade deviations before concrete is placed, reducing costly re-work.
Irrigation & Drainage Grading: Single-slope capability makes the LL300S-X1-PRO a natural fit for ag grading, drainage field prep, and retention basin slope work where consistent fall-per-foot matters across large areas.
Utility & Pipeline Trenching: Maintain consistent invert grades along trench runs. The long working diameter ensures the receiver picks up the beam reliably even when working at extended distances from the instrument.
Compatible Accessories
- Spectra Precision HL450 Replacement Receiver
- Spectra Precision RC601 Wireless Remote Control
- Spectra Precision NiMH Rechargeable Battery Pack
- Heavy-Duty Contractor Tripod
- Grade Rod Clamp & Receiver Bracket
- Replacement Tenths Grade Rod
Related Guides
- How to Set Single-Slope Grade with the LL300S
- HL450 Receiver Setup & Sensitivity Guide
- Rotary Laser Level Buyer's Guide for Contractors
- Using a Wireless Remote on a Grade Laser: Tips & Best Practices
Frequently Asked Questions
- Can the LL300S-X1-PRO handle dual-slope grading?
- No. The LL300S is a single-slope laser, meaning it grades along one axis at a time. For dual-slope applications—such as crowned road grading or two-way drainage pads—consider the Spectra Precision LL500 series, which supports simultaneous X and Y axis slopes.
- What is the wireless remote range and what functions does it control?
- The included remote operates up to 200 feet (60 m) from the instrument. It allows the operator to adjust slope percentage, change rotation speed, raise or lower elevation, and activate the out-of-level alarm reset—all without returning to the laser.
- Is the HL450 receiver compatible with other Spectra Precision lasers?
- Yes. The HL450 is compatible with most Spectra Precision and Trimble red-beam rotary lasers. If you own other lasers in the LL300, LL400, or LL500 families, the HL450 can serve as a cross-platform receiver on those instruments as well.
- How long does the rechargeable battery pack last on a full charge?
- Under typical operating conditions at moderate rotation speed, the included NiMH rechargeable pack delivers up to 100 hours of runtime. Heavy use at maximum rotation speed or in cold-weather conditions will reduce runtime; a spare battery pack is recommended for multi-day pours or remote sites without reliable charging access.
Frequently Asked Questions
Can the LL300S-X1-PRO handle dual-slope grading?
No. The LL300S is a single-slope laser, meaning it grades along one axis at a time. For dual-slope applications—such as crowned road grading or two-way drainage pads—consider the Spectra Precision LL500 series, which supports simultaneous X and Y axis slopes.
What is the wireless remote range and what functions does it control?
The included remote operates up to 200 feet (60 m) from the instrument. It allows the operator to adjust slope percentage, change rotation speed, raise or lower elevation, and activate the out-of-level alarm reset—all without returning to the laser.
Is the HL450 receiver compatible with other Spectra Precision lasers?
Yes. The HL450 is compatible with most Spectra Precision and Trimble red-beam rotary lasers. If you own other lasers in the LL300, LL400, or LL500 families, the HL450 can serve as a cross-platform receiver on those instruments as well.
How long does the rechargeable battery pack last on a full charge?
Under typical operating conditions at moderate rotation speed, the included NiMH rechargeable pack delivers up to 100 hours of runtime. Heavy use at maximum rotation speed or in cold-weather conditions will reduce runtime; a spare battery pack is recommended for multi-day pours or remote sites without reliable charging access.