Topcon RL-H5A Self-Leveling Laser PS.DB2 Kit with LS-80X Receiver - 1021200-50 (uses Alkaline Batteries)

The Topcon RL-H5A with LS-80X Receiver is a field-proven, self-leveling rotary laser built for contractors who need fast, accurate grade control across large jobsites. With a working diameter of up to 2,000 feet and a rugged IP66-rated housing that shrugs off rain, dust, and the daily abuse of a working site, the RL-H5A delivers reliable performance whether you're pouring a slab, setting drainage grades, or running machine control on a grading job. This double-battery (DB) package ships with the LS-80X remote receiver and an alkaline battery pack so your crew can hit the ground running.

Product Overview

Designed for both interior and exterior applications, the RL-H5A operates at variable rotation speeds from 300 to 1,500 RPM, giving you flexibility between visibility in bright outdoor conditions and smooth line projection for interior layout work. The automatic self-leveling compensator corrects within ±5 degrees, and the instrument will shut down and alert you if the tripod shifts beyond that range—protecting grade accuracy on every shot. The RL-H5A pairs seamlessly with Topcon's extensive receiver and machine control ecosystem, making it a natural upgrade or addition to any Topcon-invested operation.

Key Specifications

• Working Range: Up to 2,000 ft diameter (1,000 ft radius) with LS-80X receiver
• Self-Leveling Range: ±5 degrees automatic
• Leveling Accuracy: ±10 arc seconds
• Rotation Speed: 300, 600, 1,000, 1,500 RPM (selectable)
• Laser Class: Class IIIa / 3R, 635 nm red beam
• IP Rating: IP66 dust and water resistant
• Battery Life: Up to 100 hours on alkaline AA batteries
• Operating Temperature: -4°F to 122°F (-20°C to 50°C)
• Weight: Approximately 4.4 lbs (2.0 kg)

What's in the Kit

• Topcon RL-H5A self-leveling rotary laser
• LS-80X laser receiver with LCD readout and audible grade alert
• Alkaline battery package (double battery configuration)
• Receiver carrying pouch
• Operator's manual and calibration certificate

Job Applications

Concrete Flatwork and Slab Pours: Set the RL-H5A on a tripod at slab center and reference the LS-80X on a grade rod or screed rail. The receiver's LCD and audio alerts let finishers maintain consistent elevation across the entire pour without stopping to check a level.

Site Drainage and Grading: At 1,000 ft radius, the RL-H5A covers even large commercial pads in a single instrument setup. Operators can set a defined slope using the built-in grade mode to dial in positive drainage away from structures.

Pipe and Utility Installation: Trench crews use the LS-80X on a grade rod to establish and verify consistent invert elevation for storm, sewer, and conduit runs—reducing costly re-excavation.

Interior Layout and Suspended Ceilings: Drop rotation speed to 300 RPM for a crisp visible line on interior walls. The RL-H5A handles drop-ceiling grid layout, wall furring, and MEP rough-in elevation checks with equal ease.

Compatible Accessories

• Topcon LS-80L Receiver — Extended 31.5" detection window for machine control
• Topcon RD-18 Wireless Remote Control — Adjust elevation from up to 330 ft away
• Topcon LN-150 Laser Receiver Clamp — Universal rod clamp with fine-adjust
• Topcon TK-80 Tripod — Heavy-duty aluminum tripod matched to RL series lasers
• Topcon NiMH Rechargeable Battery Pack — Extended runtime for all-day pours

Related Guides

• How to Set Up a Rotary Laser for Concrete Flatwork
• Rotary Laser vs. Optical Level: Which Tool Is Right for Your Project?
• Understanding Laser Receiver Sensitivity Grades for Exterior Use
• Topcon RL-H5A vs. RL-H4C: Key Differences Explained

Frequently Asked Questions

Does the RL-H5A work in direct sunlight?

Yes. The RL-H5A is designed for outdoor use and paired with the LS-80X receiver for precisely this reason. The receiver detects the beam at distances up to 1,000 ft in full sun, even when the beam is invisible to the naked eye. For indoor applications where a visible line is needed, reduce rotation speed to 300 RPM.

What happens if the tripod gets bumped and the instrument goes out of level?

If the tilt exceeds the ±5-degree self-leveling range, the RL-H5A automatically stops rotating and activates an out-of-level warning. This prevents your crew from unknowingly working off a false grade. Simply re-level the tripod and the instrument will re-engage automatically.

Can I use the RL-H5A with a machine control receiver on a dozer or grader?

The RL-H5A is compatible with Topcon's LS-80L and other machine-mounted receivers. For full automated blade control (indicate-only or automatic), verify compatibility with your machine control system. The RL-H5A is an excellent single-grade machine control laser for straightforward earthwork applications.

What is included in the alkaline battery (DB) package and how long does it last?

The DB designation means the kit includes two sets of alkaline AA batteries, giving your crew backup power on site. On a fresh set of alkaline AAs, the RL-H5A delivers up to 100 hours of runtime—enough for multiple full days of continuous operation before a battery swap is needed.