Topcon RL-HV2S-BL Self-Leveling Dual Grade Laser DB Kit - Powered by Alkaline Batteries (1051612-BL)

The Topcon RL-HV2S-BL is a professional-grade self-leveling dual grade rotary laser built for contractors who demand accuracy across a wide range of jobsite applications. Running on standard alkaline batteries and offered here as a bare tool, the RL-HV2S-BL is the right choice when you already own compatible accessories or need to configure a custom kit around your existing receiver and tripod setup. Whether you're grading a site, setting foundations, or running wall layout, this laser delivers the dual-axis grade capability professionals rely on.

Overview & Jobsite Applications

The RL-HV2S-BL operates in both horizontal and vertical planes, making it a versatile tool across multiple trades and project types. In horizontal mode, it handles everything from rough grading and concrete flatwork to foundation elevation checks. Flip it to vertical mode and you've got a precise reference plane for wall layout, column alignment, and façade plumb work. The dual grade function lets you simultaneously set independent slopes on both the X and Y axes — critical for drainage-sensitive applications like parking lots, agricultural pads, and landscaping grading where single-axis slope isn't sufficient. Self-leveling technology means the instrument automatically compensates for minor setup inconsistencies, reducing setup time and improving repeatability across long work sessions.

Key Specifications

• Model: RL-HV2S-BL (Bare Tool)
• Grade Range: ±10% on both X and Y axes simultaneously
• Self-Leveling Range: ±5°
• Accuracy: ±1mm at 10m (±1/16" at 30ft)
• Operating Range: Up to 800m diameter (with compatible receiver)
• Rotation Speed: 300 / 600 / 1200 RPM selectable
• Power Source: Alkaline batteries (D-cell)
• Battery Life: Approximately 100 hours at standard rotation
• Dust & Water Protection: IP66 rated
• Operating Temperature: -20°C to +50°C (-4°F to 122°F)
• Configuration: Bare tool — no receiver, rod clamp, or case included

Key Features

• Simultaneous dual-axis grade setting — set X and Y slopes independently without repositioning
• Automatic self-leveling with out-of-level alert to prevent undetected errors
• Three selectable rotation speeds for visibility in varying light and distance conditions
• Remote control ready — compatible with Topcon RD-18 wireless remote for full instrument control at the rod
• Electronic grade matching via receiver for fast single-operator slope setup
• IP66-rated housing withstands dust, rain, and jobsite washdown
• Wide operating temperature range suitable for cold-weather and hot-climate work
• Alkaline D-cell power — no proprietary battery pack to charge or replace

Job Applications

Site Grading & Earthwork: Set precise dual-axis slopes across large pads. The RL-HV2S handles agricultural fields, commercial parking areas, and subdivision grading where drainage slope must be accurate on two planes simultaneously.

Concrete Flatwork & Foundations: Establish elevation control for slab pours, footing forms, and stem walls. The high accuracy rating and long range keep your crew productive across large pour areas without instrument moves.

Vertical Layout & Alignment: Switch to vertical plane operation for stud wall layout, curtain wall alignment, column plumb checks, and façade installation reference lines — all from a single instrument.

Underground & Utility Work: High RPM mode and long-range receiver compatibility make the RL-HV2S effective for pipe grade control and trench work in conjunction with a compatible laser receiver.

Compatible Accessories

• Topcon LS-100D Laser Receiver — recommended long-range detector for outdoor use
• Topcon RD-18 Wireless Remote Control — full instrument control from the grade rod
• Topcon LS-80L Laser Receiver — versatile receiver for general applications
• Universal Laser Tripod — heavy-duty tripod for stable instrument setup
• Grade Rod & Rod Clamp Kit — rod clamp compatible with Topcon receivers
• Alkaline D-Cell Battery Pack — keep spares on site for uninterrupted operation

Related Guides

• How to Set Dual Grade with the Topcon RL-HV2S
• Choosing the Right Rotary Laser for Grading Applications
• Bare Tool vs. Full Kit: Which Laser Package Is Right for You?
• Topcon Rotary Laser Comparison Guide

Frequently Asked Questions

What is included with the bare tool configuration?

The RL-HV2S-BL bare tool package includes the laser instrument only. No receiver, rod clamp, remote control, or carrying case is included. This is ideal for contractors adding to existing Topcon setups or building a custom kit with separately purchased accessories.

What receiver is compatible with the RL-HV2S-BL?

The RL-HV2S-BL is compatible with Topcon receivers including the LS-100D and LS-80L. For remote-controlled grade matching in single-operator setups, pair it with the Topcon RD-18 wireless remote and a compatible receiver.

Can this laser be used outdoors in direct sunlight?

Yes. The RL-HV2S-BL is designed for outdoor use and achieves full operating range when used with a compatible laser receiver. Like all rotary lasers, a detector is required for outdoor visibility — the naked eye cannot detect the beam in daylight at jobsite distances.

Does the RL-HV2S-BL support single-grade operation as well as dual grade?

Yes. The RL-HV2S can operate in single X-axis grade, single Y-axis grade, or simultaneous dual-axis grade modes. It also operates in standard self-level mode for applications that don't require slope, giving you full flexibility from one instrument.