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Overview
The Topcon RL-H5B Self-Leveling Laser PS.DB Kit (1035257-01) delivers reliable horizontal leveling for general contractors, landscapers, and commercial builders working on grade-critical projects. This complete package includes the RL-H5B laser head, LS-80L receiver with rod clamp, aluminum grade rod marked in 10ths, and heavy-duty tripod—everything needed for elevation transfer, foundation layout, and site grading work. The alkaline battery design eliminates charging downtime on remote jobsites, allowing crews to swap fresh D-cells in seconds and maintain continuous operation. Topcon's self-leveling mechanism with motorized pendulum automatically levels within ±5° and shuts down if disturbed beyond acceptable tolerances, preventing costly measurement errors during concrete pours and excavation tasks.
Key Specifications
- Self-Leveling Range: ±5 degrees automatic compensation
- Leveling Accuracy: ±3/32" at 100 feet (±2.5mm at 30m)
- Working Diameter: 1,600 feet (500m) with LS-80L receiver
- Rotation Speed: 600 RPM (fixed)
- Environmental Protection: IP66 dust-tight and water-resistant
- Power Source: 4× D-cell alkaline batteries (60+ hours runtime)
- Operating Temperature: 14°F to 122°F (-10°C to 50°C)
- Laser Class: Class 2 visible red beam (635nm)
- Unit Weight: 5.5 lbs (2.5 kg) laser head only
What's in the Kit
- RL-H5B Laser Head: Self-leveling rotary transmitter with automatic tilt shutdown and visible red beam
- LS-80L Laser Receiver: Front/back detection with visual and audible on-grade indicators, operating range to 800' radius
- Rod Clamp Assembly: Secure mounting bracket for attaching LS-80L receiver to grade rod
- Aluminum Grade Rod (10ths): Telescoping measuring staff with decimal-foot graduations for elevation readings
- Aluminum Tripod: Adjustable-leg support with 5/8"-11 threaded mounting platform
- Rechargeable Battery Pack: NiMH power option with charger (standard alkaline D-cells also compatible)
- Protective Carrying Case: Hard-shell transport case with custom foam inserts for all components
- Instruction Manual: Setup guide with calibration procedures and troubleshooting reference
Job Applications
- Foundation Excavation: Verify dig depth across footings and basement excavations to ensure uniform depth before concrete placement
- Concrete Slab Pours: Set screed rails and establish consistent elevation references for flatwork crews pouring warehouse floors, sidewalks, and parking structures
- Site Grading & Drainage: Establish slope benchmarks for proper water runoff on parking lots, athletic fields, and landscape installations
- Pier & Column Layout: Transfer elevation from benchmark to formwork locations, ensuring uniform height across multiple structural elements
- Suspended Ceiling Installation: Set laser reference plane for commercial drop ceiling grid systems, eliminating stringline sagging over long distances
- Retaining Wall Construction: Maintain consistent course heights and establish backfill elevations during segmental block or poured-wall installations
Compatible Accessories
Expand system capabilities with these genuine Topcon components:
- Topcon LS-100D Digital Receiver – Upgrade to millimeter-precision digital readout with extended 1,000' range
- Topcon RC-500 Remote Control – Adjust rotation speed and axis alignment from receiver position up to 300 feet away
- Topcon Tri-Max Quick-Clamp Tripod – Reinforced composite-head tripod with tool-free leg locks for faster setups
- SECO 25' Fiberglass Grade Rod – Extended-length rod for deep excavations and tall structure measurements
- RL-H5B Alkaline Battery Tray – Replacement battery holder for 4× D-cell operation
Related Guides
- How to Level-Check Your Rotary Laser for Accuracy – Field calibration procedure to verify ±3/32" spec without sending unit for service
- Topcon RL-H5A vs. RL-H5B Comparison – Feature differences between rechargeable-only (H5A) and dual-power (H5B) models
- Understanding Laser Receiver Signal Displays – Interpreting LS-80L arrow patterns and audio tones for accurate elevation readings
- Troubleshooting: Rotary Laser Won't Self-Level – Diagnose pendulum lock, out-of-range tilt, and motorized leveling failures
Frequently Asked Questions
- Can the RL-H5B be used for vertical plumb applications?
- No, the RL-H5B is horizontal-only. For plumb beam or dual-axis work, consider the Topcon RL-SV2S dual-grade laser or RL-VH4DR combination system with vertical mode capability.
- What's the difference between the PS.DB kit and standard RL-H5B packages?
- The PS.DB designation indicates this kit includes both alkaline battery capability and the DB (dry battery) holder, plus the complete package with LS-80L receiver, grade rod, and tripod. Standard packages may include only the laser head or rechargeable battery options without the full accessory set.
- How do I know when the laser is properly leveled and ready to use?
- The RL-H5B self-levels automatically within 4-5 seconds after power-on. A solid green LED indicates successful leveling and rotation. If the unit is tilted beyond ±5°, the laser beam shuts off and the LED blinks red, requiring manual repositioning of the tripod to bring it within leveling range.
- Can this laser be used in bright outdoor sunlight?
- The visible red beam is detectable with the LS-80L receiver in full sunlight at typical working distances (200-400 feet). For maximum range or extremely bright conditions, position the laser in shaded areas when possible, or upgrade to the LS-100D receiver with enhanced detection sensitivity.
