Topcon RL-HV2S-BCC Self-Leveling Dual Grade Laser RB Kit with

Dual-Axis Grade Capability in a Single Self-Leveling Rotary Laser

The Topcon RL-HV2S is a professional-grade rotary laser built for contractors who need one instrument that handles level layout, single-axis grade, and full dual-axis compound slopes without switching tools. Whether you're working interior finishes, drainage slopes, or complex site grading, the RL-HV2S delivers ±10% grade range on both axes with reliable self-leveling accuracy. Sold as the RB 1051612-BCC configuration, this kit is an authorized dealer offering from Express Tools, backed by Topcon's professional warranty and support network.

Overview: Where the RL-HV2S Performs on the Jobsite

Designed for contractors who move between applications throughout the day, the RL-HV2S excels on grading and excavation sites, slab and flatwork pours, interior build-out work, and utility installation. Its ability to operate in horizontal, vertical, and manual grade modes makes it one of the most versatile single-head rotary lasers in Topcon's red-beam lineup. The self-leveling pendulum compensates automatically on reasonably stable setups, reducing setup time and eliminating manual leveling errors on flat-to-moderate terrain.

Key Specifications

• Model: Topcon RL-HV2S (RB 1051612-BCC)
• Beam Color: Red
• Operating Modes: Horizontal, Vertical, Dual-Axis Grade (H&V)
• Grade Range: ±10% on X and Y axes
• Self-Leveling Range: ±5°
• Accuracy: ±1mm at 10m (±3/32" at 30ft)
• Rotation Speed: 300 / 600 / 1200 RPM (selectable)
• Working Range: Up to 600m diameter with compatible receiver
• IP Rating: IP66 — dust-tight and water-resistant
• Power: Alkaline D-cell batteries or rechargeable pack (sold separately)
• Battery Life: Approx. 60 hours (alkaline)
• Receiver: Not included — compatible with Topcon LS-80L and LS-80X receivers

Key Features

• Dual-axis grade setting via front-panel controls — no manual tilt required
• Automatic self-leveling with out-of-level alarm
• Remote control compatible for single-operator use
• Selectable rotation speed for indoor/outdoor visibility optimization
• Rugged housing rated IP66 for dust and water resistance
• Compact, balanced design for easy tripod or grade rod mounting
• Compatible with Topcon's full line of LS-series laser receivers

Job Applications

Site Grading & Drainage: Set single or dual-axis slopes across large pads with precision. The ±10% grade range on both axes handles most drainage and rough grading work without manual shimming.

Concrete Flatwork & Slabs: Spin the beam at 600 or 1200 RPM for consistent screed references across wide pours. The RL-HV2S holds grade through the pour cycle on stable setups.

Interior Layout & Plumb: Switch to vertical mode for partition layout, plumb references, and door/window alignment. The same instrument serves your interior finish crew as it does your site team.

Utility & Pipe Installation: Establish pipe grade references quickly using single-axis slope mode. The out-of-level alarm protects against instrument creep on soft or vibrating ground conditions.

Compatible Accessories

• Topcon LS-80L Laser Receiver — long-range rod-mounted detector for outdoor use
• Topcon LS-80X Laser Receiver — extended range detector with large display
• Topcon RC-400 Remote Control — wireless grade adjustment for single-operator workflow
• Topcon Rechargeable Battery Pack — extended runtime alternative to alkaline D-cells
• Heavy-Duty Laser Tripod — stable platform for rotary laser applications
• Laser Grade Rod & Target — rod-mounted receiver setup for grade checking

Related Guides

• How to Set Dual-Axis Grade with the Topcon RL-HV2S
• Choosing the Right Topcon Laser Receiver for Your Rotary Laser
• Rotary Laser Setup Guide for Concrete Flatwork
• Red Beam vs. Green Beam Lasers: Which Do You Need?

Frequently Asked Questions

Does the Topcon RL-HV2S include a receiver?

No. The RB 1051612-BCC configuration does not include a laser receiver. For outdoor use or working ranges beyond direct beam visibility, you'll need a compatible Topcon LS-series receiver such as the LS-80L or LS-80X, both available separately at Express Tools.

What is the maximum grade the RL-HV2S can set?

The RL-HV2S supports grade settings up to ±10% on both the X and Y axes simultaneously. This covers the vast majority of site grading, drainage, and utility slope applications encountered in commercial and residential construction.

Can the RL-HV2S be used for interior work as well as site work?

Yes. The instrument operates in horizontal mode for level layout, vertical mode for plumb and partition references, and grade mode for slope work. This makes it suitable for both site grading crews and interior finish teams, eliminating the need for separate instruments.

Is the Topcon RL-HV2S compatible with remote control operation?

Yes. The RL-HV2S is compatible with the Topcon RC-400 remote control, which allows a single operator to adjust grade settings, rotation speed, and other functions from the rod position without returning to the instrument — a significant time saver on large pads and open sites.