The Topcon RL-H5A DB2 Kit (1021200-50-K1) delivers professional rotary laser performance in a complete, ready-to-work package designed for contractors who need reliable grade and level control from day one. Combining the battle-tested RL-H5A horizontal rotary laser with the LS-80X machine-mountable receiver, a tenths-graduated measuring rod, and a sturdy aluminum tripod, this kit covers grading, concrete flatwork, drainage, and general site layout without any additional purchases. Alkaline D-cell power keeps your workflow moving—no chargers, no downtime, no excuses on the job.
Product Overview & Jobsite Applications
The RL-H5A is Topcon's most proven horizontal rotary laser, trusted on commercial, civil, and residential jobsites worldwide. Its self-leveling pendulum compensates automatically within ±5° of level, so crews can set up fast and get to work. The IP66-rated housing sheds dust and driving rain, while the rubber over-mold absorbs the drops and bumps inherent to active job sites. Whether you're pulling grade on a 500-foot drainage swale, screeding a warehouse slab, or setting forms for a foundation, the RL-H5A gives you consistent ±1/16" accuracy at 100 feet across a full 2,600-foot diameter working range.
Key Specifications
- Model: Topcon RL-H5A (Kit SKU: 1021200-50-K1)
- Laser Class: Class II, 635nm red visible laser
- Self-Leveling Range: ±5°
- Leveling Accuracy: ±1/16" at 100 ft (±1.5mm at 30m)
- Working Diameter: Up to 2,600 ft (800m) with receiver
- Rotation Speed: 600 RPM standard; 300 / 600 / 1200 RPM selectable
- Power Source: 4x D-cell alkaline batteries
- Battery Life: Approximately 100 hours continuous
- IP Rating: IP66 dust and water resistant
- Operating Temperature: -4°F to +122°F (-20°C to +50°C)
What's in the Kit
- Topcon RL-H5A horizontal rotary laser with pendulum self-leveling
- Topcon LS-80X machine-mountable laser receiver with digital readout and audible grade indicator
- Tenths-graduated measuring rod for direct elevation readings in the field
- Aluminum tripod for stable, height-adjustable instrument setup
- Carrying case, batteries, and operator documentation
Job Applications
Concrete Flatwork & Slab Pours: Set the RL-H5A on the tripod at slab center and use the LS-80X on a grade rod to verify screed rail heights before and during the pour—eliminating high and low spots before they cost you a grind or an overlay.
Site Grading & Drainage: Mount the LS-80X to a blade or scraper mast and let the machine operator run grades to design elevation across large pads. The 2,600-foot working range means one instrument setup covers most commercial sites without moving.
Foundation Layout & Footing Forms: Use the horizontal plane to transfer a benchmark elevation around an entire foundation perimeter, keeping all footing forms at consistent height before the concrete truck arrives.
Utility & Pipe Installation: Establish invert elevations for storm, sanitary, or irrigation lines by shooting rod readings in the trench—keeping pipe on specified grade throughout the run.
Compatible Accessories
- Topcon LS-80L Standard Laser Receiver
- Topcon RD-18 Remote Control for RL-H5A
- Replacement D-Cell Battery Pack
- Heavy-Duty Elevator Tripod for Rotary Lasers
- 8-Foot Fiberglass Grade Rod, Tenths
Related Guides
- How to Set Up a Rotary Laser for Concrete Flatwork
- Rotary Laser vs. Pipe Laser: Choosing the Right Tool
- RL-H5A vs. RL-H4C: Which Topcon Laser Is Right for Your Crew?
- Using a Laser Receiver on a Motor Grader Blade
Frequently Asked Questions
- Does the RL-H5A work in outdoor daylight conditions?
- Yes. When paired with the included LS-80X receiver, the RL-H5A operates effectively in full sunlight out to its maximum 2,600-foot working diameter. The receiver detects the laser beam even when it is invisible to the naked eye in bright conditions.
- Can the LS-80X receiver be mounted on heavy equipment?
- Absolutely. The LS-80X is specifically designed for machine mounting on motor graders, dozers, and skid steers via a standard mast clamp. Its large display and loud audible alerts allow operators to read grade without leaving the cab.
- How long do the alkaline batteries last in the RL-H5A?
- Topcon rates the RL-H5A at approximately 100 hours of continuous runtime on four D-cell alkaline batteries. Under normal field use with occasional shutdowns, most contractors get multiple full workweeks per set of batteries.
- Is the RL-H5A covered by a warranty?
- Topcon backs the RL-H5A with a comprehensive manufacturer's warranty. Express Tools is an authorized Topcon dealer, so your instrument is fully eligible for factory warranty service. Contact our team for current warranty terms and service center information.
Frequently Asked Questions
Does the RL-H5A work in outdoor daylight conditions?
Yes. When paired with the included LS-80X receiver, the RL-H5A operates effectively in full sunlight out to its maximum 2,600-foot working diameter. The receiver detects the laser beam even when it is invisible to the naked eye in bright conditions.
Can the LS-80X receiver be mounted on heavy equipment?
Absolutely. The LS-80X is specifically designed for machine mounting on motor graders, dozers, and skid steers via a standard mast clamp. Its large display and loud audible alerts allow operators to read grade without leaving the cab.
How long do the alkaline batteries last in the RL-H5A?
Topcon rates the RL-H5A at approximately 100 hours of continuous runtime on four D-cell alkaline batteries. Under normal field use with occasional shutdowns, most contractors get multiple full workweeks per set of batteries.
Is the RL-H5A covered by a warranty?
Topcon backs the RL-H5A with a comprehensive manufacturer's warranty. Express Tools is an authorized Topcon dealer, so your instrument is fully eligible for factory warranty service. Contact our team for current warranty terms and service center information.