Overview
The Spectra Precision LL300S-47 Laser Package delivers a complete single-grade laser system for construction professionals requiring accuracy, extended runtime, and remote operation capabilities. General contractors, grading crews, concrete contractors, and excavation teams use this package for establishing level or grade references across sites without interrupting workflow to manually adjust the instrument. This kit combines the self-leveling LL300S rotating laser with the HL760 digital receiver, rechargeable battery system, and RC602 radio remote control—eliminating downtime from battery replacement and enabling slope adjustments from up to 300 feet away. The integrated package reduces equipment costs while providing the precision and flexibility demanded on professional job sites where efficiency directly impacts profitability.
Key Specifications
- Accuracy: ±1/16 inch at 100 feet (±1.5mm at 30m)
- Leveling Range: ±5 degrees self-leveling
- Working Diameter: Up to 1,600 feet (500m) with HL760 receiver
- Rotation Speed: 0, 60, 120, 300, 600 RPM (variable)
- Grade Capability: Manual X and Y axis slopes
- Remote Control Range: 300 feet (90m) with RC602
- Operating Time: 60+ hours with rechargeable NiMH batteries
- Receiver Channels: 2 channels on HL760 (front/back detection)
- Receiver Accuracy: ±1/16 inch (±1.5mm) digital readout
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- IP Rating: IP66 dust-tight and water-resistant
- Laser Class: Class 2 visible red beam
What's in the Kit
- LL300S Self-Leveling Rotating Laser
- HL760 Digital Laser Receiver with Rod Clamp
- RC602 Radio Remote Control
- Rechargeable NiMH Battery Pack
- Battery Charger with Regional Power Adapters
- Laser Target Plate
- Heavy-Duty Carrying Case
- Operator Manual and Quick Start Guide
Job Applications
- Site Grading and Excavation: The 1,600-foot diameter working range with the HL760 receiver covers large excavation zones, allowing operators on skid steers or excavators to maintain grade without constant grade checker intervention. Remote slope adjustment from the cab eliminates walking back to the instrument on expansive sites.
- Concrete Slab Preparation: Self-leveling setup within 60 seconds establishes consistent elevation references for screed rails and formwork. The ±1/16-inch accuracy ensures slabs meet flatness specifications, while the receiver's digital readout provides instant verification of screeded surface elevation.
- Foundation Layout and Elevation Transfer: Variable rotation speeds from 0 to 600 RPM optimize visibility in bright conditions or when precision alignment is required. The dual-axis manual grade capability allows establishing slope references for drainage around foundation perimeters.
- Drainage and Utility Trenching: Long battery runtime supports all-day trenching operations without mid-shift recharging. The HL760's dual-channel detection provides on-grade indication visible to equipment operators, reducing over-excavation and material waste on utility installation projects.
- Interior Floor Leveling: The compact LL300S footprint fits on standard tripods in confined interior spaces. Remote control functionality allows single-operator workflows when setting ceiling grid heights, drop ceiling installations, or verifying floor flatness across commercial interior spaces.
- Parking Lot and Pavement Grading: Manual slope settings in both X and Y axes establish cross-slopes and longitudinal grades for proper pavement drainage. The 600 RPM high-speed rotation mode maintains beam visibility in direct sunlight during asphalt paving operations.
Compatible Accessories
Spectra Precision HR320 Machine-Mounted Receiver – Mast or blade-mounted receiver for excavator and dozer grade control integration
Spectra Precision HL450 Basic Receiver – Cost-effective single-channel receiver alternative for smaller crews
Heavy-Duty Aluminum Tripod – Stable platform for laser setup on uneven terrain
Spectra Precision Direct Elevation Grade Rod – Telescoping rod with metric or inch graduations
Replacement NiMH Battery Pack – Spare battery for continuous operation across multiple shifts
Alkaline Battery Tray – Backup power option using standard D-cell batteries
Related Guides
Rotating Laser Setup Best Practices for Accurate Site Layout
Spectra LL300S vs LL400: Choosing the Right Single-Grade Laser
Understanding Laser Receiver Accuracy and Detection Range
Troubleshooting: Rotating Laser Won't Self-Level
Frequently Asked Questions
- Can the LL300S-47 be used with machine control systems on excavators or dozers?
- The LL300S laser is compatible with machine-mounted receivers like the Spectra HR320, enabling basic grade control integration. However, this package includes the handheld HL760 receiver designed for grade rod applications. For dedicated machine control, consider pairing the laser with appropriate mast or blade-mounted receivers sold separately, or explore dual-grade lasers with full machine control capability.
- What is the actual runtime with the included rechargeable battery pack?
- The rechargeable NiMH battery pack provides 60+ hours of continuous operation under normal conditions. Runtime varies with temperature (cold weather reduces capacity), rotation speed (higher RPM consumes more power), and remote control usage frequency. Having a spare charged battery pack enables uninterrupted operation across extended projects or multiple consecutive shifts.
- How does the remote control function differ from manual slope adjustment on the laser?
- The RC602 radio remote duplicates the laser's control panel functions wirelessly from up to 300 feet away. This allows operators to adjust slope settings, rotation speed, and axis selection without walking to the instrument—critical when the laser is positioned in hazardous areas, across excavations, or at distant grade control points. Manual adjustment requires physical access to the laser housing.
- Is the HL760 receiver compatible with other Spectra laser models or competing brands?
- The HL760 is a universal laser receiver that detects rotating laser beams from any manufacturer operating in the standard red-beam frequency range. It will work with Spectra, Topcon, Leica, Trimble, and other brands' rotating lasers. However, optimal detection range and accuracy are calibrated specifically for Spectra Precision lasers. Always verify compatibility when mixing equipment across manufacturers for mission-critical applications.
