Overview
The Spectra Precision LL400HV-2 Laser Package delivers a complete leveling solution for residential and commercial contractors working in imperial measurements. This bundled system pairs the dual-grade LL400HV laser with the HL760 digital receiver, tripod, and inches-graduated rod—everything needed for site preparation, foundation work, and interior installations. Designed for builders, concrete contractors, and grading professionals who demand accuracy without complexity, this package eliminates the guesswork of component compatibility while providing reliable ±1/16" accuracy at 100 feet. Though discontinued as Spectra streamlined their product families, available stock offers exceptional value for teams standardizing on proven laser technology with full imperial measurement support.
Key Specifications
- Laser Type: Dual-grade horizontal and vertical
- Accuracy: ±1/16" at 100 feet (±1.5mm at 30m)
- Working Range: Up to 1,600 feet diameter with receiver
- Self-Leveling Range: ±5 degrees
- Beam Visibility: 200 feet without receiver in typical conditions
- Power Source: Rechargeable NiMH battery or alkaline D-cells
- Runtime: 30+ hours on single charge
- Operating Temperature: 14°F to 122°F (-10°C to 50°C)
- IP Rating: IP66 dust-tight and water-resistant
- Included Rod: Inches-graduated measuring rod with tenths markings
What's in the Kit
- LL400HV-2 dual-grade laser level with horizontal and vertical capabilities
- HL760 digital laser receiver with LCD display and audio indicators
- Aluminum tripod with adjustable legs and quick-release mounting
- Inches-graduated leveling rod (typically 8ft or 10ft telescoping)
- Rechargeable NiMH battery pack with charger
- Hard-shell carrying case for laser unit
- Remote control for laser operation (RC402N or similar)
- Laser safety glasses for enhanced beam visibility
- Calibration certificate and user manual
Job Applications
- Foundation and Footing Layout: Establishes precise elevation reference points across footprint areas, ensuring foundation forms sit at consistent heights before concrete pours—critical for preventing structural settling issues and code violations.
- Concrete Slab Grading: Sets screed height for flatwork crews pouring garage floors, basement slabs, and commercial deck pours where maintaining ±1/16" tolerance prevents drainage problems and eliminates costly grinding after cure.
- Site Grading and Excavation: Provides continuous grade reference for equipment operators cutting building pads, swales, and parking areas—the 1,600-foot range covers entire residential lots from single setup positions.
- Drop Ceiling Installation: Projects level reference line around interior perimeters for suspended ceiling grid systems in commercial spaces, eliminating string-line sag and ensuring professional-grade alignment across large open areas.
- Deck and Patio Construction: Establishes proper slope (typically 1/4" per foot) for drainage on outdoor living spaces while maintaining level reference for support posts and beam installations—preventing water pooling against building foundations.
- Plumbing Rough-In: Sets consistent invert elevations for drainage pipe installations in commercial buildings where maintaining proper fall rates ensures code compliance and prevents backup issues in waste systems.
Compatible Accessories
Laser Receivers and Detectors | Grade Rods and Leveling Staffs | Heavy-Duty Laser Tripods | Laser Mounting Hardware | Spectra Precision Batteries
Related Guides
Complete Guide to Choosing Construction Laser Levels
Rotary Lasers vs. Line Lasers for Construction Applications
Laser Receiver Setup and Best Practices
Troubleshooting Laser Level Accuracy Problems
Frequently Asked Questions
- Can this laser be used for both interior and exterior applications?
- Yes, the LL400HV-2 excels in both environments. The IP66 rating protects against dust and water for outdoor foundation and grading work, while the dual-grade capability handles interior drop ceiling, partition layout, and finish carpentry tasks. The HL760 receiver extends range to 1,600 feet outdoors where direct beam visibility is limited, while indoor applications within 200 feet typically work with direct beam visibility alone.
- What's the advantage of the inches-graduated rod over metric versions?
- The inches rod matches standard imperial construction drawings and building practices in the U.S. market, eliminating conversion errors when working from architectural plans dimensioned in feet and inches. Tenths-of-inch graduations align with typical construction tolerances and allow direct reading without mental math—critical for fast-paced jobsite work where crew efficiency impacts profitability.
- How does the dual-grade function work on this model?
- The LL400HV-2 can project both a level 360-degree horizontal plane and a vertical plane simultaneously, or operate in single-plane mode. For grading work, you can set precise slopes in two axes (X and Y) using the remote control, with grade matching capabilities up to ±8% in 0.1% increments—ideal for creating drainage slopes, ramps, or pitched surfaces without complex calculations.
- Is this package still supported even though it's discontinued?
- Yes, Spectra Precision and Trimble continue to provide calibration services, repair parts, and technical support for the LL400 series. Battery packs, receivers, and common wear items remain available through authorized dealers. The discontinuation reflects product line consolidation rather than technology obsolescence—the LL400HV-2 remains fully capable for its intended applications and shares components with current models in the Spectra lineup.
