RL-H5A Self-Leveling Laser PS.DB Kit with LS-100D Receiver, Grade Rod INCHES and Tripod

The Topcon RL-H5A DB (Model 1021200-17-K2) is a professional-grade self-leveling rotary laser kit built for contractors who demand accuracy and reliability on demanding jobsites. Whether you're finishing concrete slabs, grading a site, or establishing elevation benchmarks across a large work area, this complete package delivers the performance you need right out of the case. With an operating range of up to 2,600 feet in diameter using the included LS-100D receiver, the RL-H5A DB is engineered to handle real-world conditions — including bright outdoor light, vibration, and extended daily use.

Overview & Jobsite Applications

The Topcon RL-H5A DB is designed for horizontal applications where consistent, fast self-leveling is essential. Its pendulum-based self-leveling mechanism compensates within ±5° and locks in a level plane in seconds, minimizing setup time and eliminating costly elevation errors. The dual-battery system (DB) extends runtime significantly over single-battery models, making it ideal for full-day pours, grading operations, and multi-crew sites where downtime is not an option. The kit is suitable for general contractors, concrete finishers, utility crews, and civil construction teams.

Key Specifications

• Model: Topcon RL-H5A DB — SKU 1021200-17-K2
• Self-Leveling Range: ±5°
• Leveling Accuracy: ±1/16 in at 100 ft (±1.5 mm at 30 m)
• Operating Range: Up to 2,600 ft diameter with LS-100D receiver
• Rotation Speed: 600 RPM (standard operating speed)
• IP Rating: IP66 — dust-tight and water-resistant for all-weather use
• Battery System: Dual alkaline battery configuration (DB) for extended runtime
• Laser Class: Class IIIa / Class 3R
• Operating Temperature: -4°F to +122°F (-20°C to +50°C)

What's in the Kit

• Topcon RL-H5A DB Rotary Laser Unit — self-leveling horizontal laser with dual-battery housing
• LS-100D Deluxe Receiver — enhanced signal detection with digital readout and audible/visual grade indicators for use in bright outdoor conditions
• Grade Rod (Inches) — graduated in inches for easy elevation readings compatible with the LS-100D
• Aluminum Tripod — adjustable, lightweight tripod for stable instrument setup on grade
• Alkaline Batteries — included to power the laser and receiver out of the box
• Carrying Case — protective transport and storage case for the complete kit

Job Applications

Concrete Slab Finishing: Set the RL-H5A DB over a benchmark, let it level, and give every finisher on the crew a consistent elevation reference across the entire pour area — eliminating screed boards and reducing rework on large flatwork jobs.

Site Grading & Drainage: Use the LS-100D receiver mounted on a grade rod to shoot elevations across rough cut or finish-grade surfaces, verifying cuts and fills to design grade before compaction or paving begins.

Foundation Layout & Footing Elevation: Transfer a single benchmark elevation to multiple footing locations simultaneously, ensuring all foundation elements are established at a consistent reference plane.

Utility & Pipeline Work: Maintain consistent invert elevations along trenches for gravity-flow pipe installation, giving your crew a fast and reliable check grade without constant instrument repositioning.

Compatible Accessories

• Topcon LS-100D Replacement Receiver
• Topcon RC-400 Remote Control
• Topcon Wall Mount Bracket
• Rechargeable Battery Pack for RL-H5A
• Heavy-Duty Aluminum Grade Rod (Inches/Metric)
• Replacement Carrying Case for RL-H5A Kit

Related Guides

• How to Set Up and Level the Topcon RL-H5A on a Jobsite
• Using a Rotary Laser for Concrete Slab Finishing — Contractor Tips
• LS-100D Receiver Setup and Grade Indicator Guide
• Choosing the Right Rotary Laser Kit for Site Grading vs. Interior Work

Frequently Asked Questions

What does the "DB" designation mean on the Topcon RL-H5A DB?

"DB" stands for Dual Battery — the RL-H5A DB uses two battery packs instead of one, significantly extending operating time per charge cycle. This is especially valuable for full-day pours or multi-shift operations where stopping to change batteries disrupts workflow.

Can the RL-H5A DB be used outdoors in direct sunlight?

Yes. While the laser beam itself may not be visible to the naked eye in bright sunlight, the included LS-100D deluxe receiver is specifically designed for outdoor use and can detect the beam accurately at distances up to 2,600 feet in diameter, even in full sun conditions.

Does this kit include everything needed to start working on day one?

Yes. The 1021200-17-K2 kit includes the RL-H5A DB laser, LS-100D receiver, aluminum tripod, grade rod in inches, alkaline batteries, and a carrying case. No additional purchases are required to begin horizontal layout or grading operations on your first day.

Is the Topcon RL-H5A DB suitable for interior construction work?

The RL-H5A DB is optimized for horizontal applications and performs well in both interior and exterior environments. For interior use such as drop ceilings, wall framing, or interior concrete work, the operating range will far exceed the space requirements of most structures, and the self-leveling accuracy of ±1/16 in at 100 ft meets finish-grade tolerances for most commercial interior applications.