The Topcon RL-HV2S (1051612-22A) is a professional-grade dual slope rotary laser designed for contractors who need precise compound grade control on demanding jobsites. Whether you're grading a parking lot, establishing drainage slopes, or finishing a complex cut-and-fill project, the RL-HV2S lets you set independent X- and Y-axis grades simultaneously — eliminating the guesswork and setup time that comes with repositioning single-slope instruments. This RB kit ships with the LS-100D digital receiver and runs on standard alkaline D-cell batteries, so you're never dependent on charging infrastructure in the field.
Product Overview & Jobsite Applications
The RL-HV2S occupies the sweet spot between entry-level grade lasers and high-end machine control systems. It self-levels within ±6° and delivers grade range up to ±10% on both axes, covering the majority of civil and site work applications encountered by general contractors, grading subcontractors, and utility crews. The instrument operates at 600 RPM for a stable beam and pairs seamlessly with the included LS-100D receiver for outdoor visibility at range. Alkaline D-cell batteries provide extended runtime without the downtime risk of depleted lithium packs on multi-day projects.
Key Specifications
- Model Number: 1051612-22A
- Grade Range (X & Y): ±10% on both axes simultaneously
- Self-Leveling Range: ±6°
- Rotation Speed: 600 RPM
- Accuracy: ±1.5mm at 30m (±1/16" at 100 ft)
- Working Range: Up to 400m diameter (with LS-100D receiver)
- Power Source: 4 x D-cell alkaline batteries
- Battery Life: Approximately 60 hours
- IP Rating: IP66 — dust-tight and water jet resistant
- Operating Temperature: -20°C to +50°C (-4°F to 122°F)
- Included Receiver: Topcon LS-100D digital grade receiver
What's in the RB Kit
- Topcon RL-HV2S dual slope rotary laser instrument
- Topcon LS-100D digital receiver with mounting clamp
- Carrying case
- 4 x D-cell alkaline batteries
- Operator's manual
Job Applications
Parking Lot & Paving: Set compound cross-slopes and longitudinal grades in a single instrument setup, keeping crews and motor graders on grade without repeated instrument moves.
Site Drainage & Earthwork: Establish precise swales, detention basin floors, and drainage channels where both X and Y grade must be controlled to direct water flow accurately.
Concrete Flatwork: Screed crews use the LS-100D receiver on a grade rod to maintain consistent slab slope for warehouse floors, loading docks, and sloped aprons.
Utility & Pipeline: Set consistent fall grades for storm drain or sanitary sewer pipe runs where grade tolerance is critical to system performance and code compliance.
Compatible Accessories
- Topcon LS-100D Replacement Receiver
- Topcon RD-18 Wireless Remote Control
- Topcon TK-1 Tripod for Rotary Lasers
- Topcon RL Carrying Case Replacement
- Grade Rod with LS-100D Compatible Clamp
Related Guides
- How to Set Dual Slope Grades with the Topcon RL-HV2S
- Rotary Laser vs. Grade Laser: Choosing the Right Tool
- Using the LS-100D Receiver for Outdoor Grade Work
- Alkaline vs. Rechargeable Laser Batteries: Pros & Cons for Contractors
Frequently Asked Questions
- Can the RL-HV2S set different slopes on the X and Y axes at the same time?
- Yes. The RL-HV2S is a true dual slope laser, meaning it independently controls grade on both the X-axis and Y-axis simultaneously — up to ±10% on each. This makes it ideal for compound grading tasks like parking lots and drainage areas where a single flat or single-slope plane won't meet design requirements.
- Does the RB kit include a receiver, or do I need to buy one separately?
- The RB kit includes the Topcon LS-100D digital receiver with mounting clamp. You do not need to purchase a receiver separately. The LS-100D displays above, on, and below grade readings digitally and is suitable for outdoor use at the RL-HV2S's full working range.
- What batteries does the RL-HV2S use, and how long do they last?
- The RL-HV2S runs on four standard D-cell alkaline batteries, which are widely available at hardware and big-box stores. Under normal operating conditions you can expect approximately 60 hours of runtime per set of batteries — well-suited for multi-day projects without access to charging.
- Is the RL-HV2S compatible with machine control systems?
- The RL-HV2S is a manually operated grade laser intended for hand-grade work with a receiver and rod. It is not designed as a machine control sensor instrument. For full machine control integration, Topcon offers dedicated systems such as the 3D-MC platform. Contact Express Tools for guidance on the right solution for your application.
Frequently Asked Questions
Can the RL-HV2S set different slopes on the X and Y axes at the same time?
Yes. The RL-HV2S is a true dual slope laser, meaning it independently controls grade on both the X-axis and Y-axis simultaneously — up to ±10% on each. This makes it ideal for compound grading tasks like parking lots and drainage areas where a single flat or single-slope plane won't meet design requirements.
Does the RB kit include a receiver, or do I need to buy one separately?
The RB kit includes the Topcon LS-100D digital receiver with mounting clamp. You do not need to purchase a receiver separately. The LS-100D displays above, on, and below grade readings digitally and is suitable for outdoor use at the RL-HV2S's full working range.
What batteries does the RL-HV2S use, and how long do they last?
The RL-HV2S runs on four standard D-cell alkaline batteries, which are widely available at hardware and big-box stores. Under normal operating conditions you can expect approximately 60 hours of runtime per set of batteries — well-suited for multi-day projects without access to charging.
Is the RL-HV2S compatible with machine control systems?
The RL-HV2S is a manually operated grade laser intended for hand-grade work with a receiver and rod. It is not designed as a machine control sensor instrument. For full machine control integration, Topcon offers dedicated systems such as the 3D-MC platform. Contact Express Tools for guidance on the right solution for your application.
