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Overview
The SitePro SLR202GRK-C Dial-IN Dual Grade Rotary Laser Package delivers professional-grade accuracy for contractors who demand precision on every pour, excavation, and grading project. This complete kit combines a high-performance rotary laser with dual-axis slope control, allowing you to dial in exact grades up to 10% in both X and Y axes without costly field adjustments or repeated setups.
Designed for concrete contractors, site prep crews, and utility installation teams, the SLR202GRK-C eliminates guesswork with its intuitive dial-in grade controls and self-leveling technology. The system establishes a visible rotating laser plane that your crew can reference across jobsites up to 2,600 feet in diameter, ensuring consistent elevations whether you're pouring a warehouse floor, grading a parking lot, or installing drainage systems.
This complete package includes the SLR202GRK-C laser, HR320 laser receiver with rod clamp, heavy-duty tripod, 16-foot grade rod, and rugged carrying case—everything needed to start working immediately. The laser's IP66 weather rating and drop-tested durability mean it performs reliably in demanding conditions, from dusty excavation sites to wet concrete pours, while the long-life battery system keeps you productive throughout extended shifts.
Key Specifications
- Accuracy: ±1/16 inch at 100 feet (±1.5mm at 30m)
- Working Diameter: 2,600 feet (800m) with receiver
- Self-Leveling Range: ±5 degrees
- Dual Grade Range: -10% to +10% on both X and Y axes
- Rotation Speed: 0, 60, 120, 300, 600 RPM (5 settings)
- Laser Class: Class 2 / Class II, 635nm red beam
- Power Source: Rechargeable Li-ion battery (50+ hours runtime)
- Weather Protection: IP66 dust-tight and water-resistant
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Drop Resistance: Tested to 1 meter onto concrete
- Leveling System: Electronic self-leveling with audible out-of-level alert
- Display: Backlit LCD showing grade percentages and system status
What's in the Kit
- SitePro SLR202GRK-C Dual Grade Rotary Laser with dial-in controls
- HR320 Laser Receiver with digital LCD readout and 3-channel detection
- Rod Clamp for secure receiver mounting to grade rod
- Heavy-Duty Aluminum Tripod with quick-release elevator column
- 16-Foot Telescoping Grade Rod with English/Metric graduations
- Rechargeable Li-ion Battery Pack with AC charger
- Remote Control for laser operation up to 300 feet away
- Laser Safety Glasses for enhanced beam visibility
- Rugged Hard-Shell Carrying Case with custom foam inserts
- Operating Manual and Quick Start Guide
- Manufacturer's 3-Year Warranty registration card
Job Applications
- Concrete Slab Pours: Establish precise elevation references for warehouse floors, basement slabs, and foundations, ensuring consistent thickness and eliminating low spots that compromise drainage and structural integrity. The dual grade capability lets you build in proper slope for floor drains without manual calculations.
- Parking Lot and Pavement Grading: Set complex drainage slopes across large asphalt or concrete surfaces, guiding crews to create the exact crowned or multi-directional grades needed for water runoff. The 2,600-foot range covers entire parking areas from a single setup, dramatically reducing layout time.
- Excavation and Earthwork: Guide excavator operators to precise depths and slopes for building pads, retention ponds, and site preparation work. The receiver mounts on excavator buckets or grade stakes, giving real-time elevation feedback that prevents over-digging and costly material removal.
- Utility Trench Installation: Maintain consistent slopes for sewer lines, drainage pipes, and underground utilities across hundreds of feet. The laser's accuracy ensures proper flow grades while the receiver alerts operators before they deviate from specification, preventing expensive rework.
- Landscaping and Hardscape Construction: Create precise elevations for retaining walls, paver patios, and grading projects where drainage and level surfaces are critical. The variable rotation speeds allow use in bright sunlight with the receiver or slower speeds for indoor visibility.
- Foundation and Footing Layout: Verify excavation depths and establish level reference planes for footings and foundation walls, ensuring structures start on solid, properly-graded bases that meet engineering specifications and building codes.
Compatible Accessories
- SitePro Laser Receiver Rod Clamp – Heavy-duty model for 2-inch grade rods
- Extended Life Battery Pack – Backup Li-ion battery for multi-day projects
- Laser Detector Card – Handheld card for quick beam location without receiver
- Machine Mount Bracket – Universal mount for excavators and grading equipment
- Elevator Tripod – Extended height tripod with 8.2-foot maximum elevation
- 25-Foot Aluminum Grade Rod – Extended rod for deep excavation work
- Replacement Laser Safety Glasses – Additional eyewear for crew members
- Wall Mount Bracket – Fixed mounting for interior construction applications
- Soft-Sided Laser Case – Lightweight alternative carrying case for transport
Related Guides
- Rotary Laser Buying Guide: Choosing the Right System for Your Trade
- How to Set Up Grade Lasers for Concrete Slab Pours
- Understanding Laser Level Accuracy and Field Calibration
- Excavation Grade Control: Laser Techniques for Site Work
FAQ
- What's the difference between single grade and dual grade rotary lasers?
- Single grade lasers slope in only one direction, suitable for simple drainage or pipe installation. The SLR202GRK-C's dual grade system allows simultaneous slopes on both X and Y axes, enabling you to create complex drainage patterns like crowned parking lots or multi-directional slabs without repositioning the laser. This saves significant setup time on jobs requiring anything beyond a simple one-way slope.
- How far can I use this laser in bright outdoor conditions?
- With the included HR320 receiver, the SLR202GRK-C works reliably up to 1,300 feet radius (2,600 feet diameter) even in full sunlight. Without a receiver, visible beam range depends on ambient light—approximately 100-150 feet in bright conditions, extending to 300+ feet in dawn/dusk or overcast conditions. For maximum outdoor range, always use the laser receiver which detects the beam electronically regardless of visibility.
- Can this laser be used for interior applications like drop ceilings?
- Yes, the SLR202GRK-C excels at interior leveling work including drop ceiling installation, interior wall framing layout, and cabinet installation reference lines. The adjustable rotation speed lets you slow the beam for better visibility indoors without a receiver, while the level mode (0% grade) provides a perfectly horizontal reference plane. The laser also includes mounting threads for wall brackets or ceiling attachments.
- How do I know if the laser is properly leveled on uneven ground?
- The SLR202GRK-C features automatic self-leveling within ±5 degrees and provides both visual and audible alerts if it's knocked out of level during operation. The LCD display shows a level status indicator, and if the laser is bumped beyond its self-leveling range, it emits a loud beeping alert and stops rotating until releveled. This safety feature prevents crews from working to an incorrect reference plane.
