The Topcon RL-HV2S Kit (1051612-21-K1) delivers a field-ready dual-grade laser system purpose-built for contractors who demand reliable slope control without sacrificing operational simplicity. Powered by standard alkaline batteries and paired with a tenths-graduated grade rod, this configuration is ideal for crews working in decimal-foot measurement environments. Whether you're grading a commercial pad, cutting drainage swales, or establishing precise subbase elevations, the RL-HV2S gives you the dual-axis slope capability and long-range performance to get the job done right the first time.
System Overview & Jobsite Applications
The Topcon RL-HV2S is a professional-grade self-leveling rotating laser engineered for dual-axis grade work. It automatically levels within ±5° on each axis and allows independent slope settings on both the X and Y axes — a critical feature for drainage design, athletic fields, and agricultural grading where cross-slope and run-slope must be managed simultaneously. The included LS-80X receiver provides a wide 2.4-inch detection window with digital readout, supporting working distances up to 2,600 feet in diameter. The heavy-duty aluminum tripod and tenths-graduated grade rod round out the kit, ensuring every component is matched and ready to deploy from day one.
Key Specifications
- Model: Topcon RL-HV2S
- Kit Part Number: 1051612-21-K1
- Laser Class: Class 3R (IEC 60825-1)
- Self-Leveling Range: ±5° on both axes
- Grade Range (X & Y): ±10% on both axes independently
- Grade Accuracy: ±1 arc second (single axis); ±1.5 arc seconds (dual axis)
- Working Range: Up to 2,600 ft diameter (with LS-80X)
- Rotation Speed: 300, 600, or 1200 RPM (selectable)
- Power Source: Alkaline batteries (included)
- IP Rating: IP66 (dust-tight and water jet resistant)
- Receiver: Topcon LS-80X with 2.4" detection window
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
What's in the Kit
- Topcon RL-HV2S dual-axis self-leveling rotating laser
- Topcon LS-80X machine or hand-held laser receiver
- Heavy-duty aluminum tripod — contractor-grade, stable platform
- Tenths-graduated grade rod — decimal-foot divisions for civil and site work
- Alkaline battery pack — ready to use out of the box
- Carrying case — organized, protective field storage
- Operator's manual and calibration documentation
Job Applications
Commercial Site Grading: Set independent X and Y slopes for large parking lots, commercial pads, and industrial yards where precise two-plane drainage is required by civil engineering plans.
Agricultural Land Leveling: Use dual-axis grade control to achieve exact field slopes for flood or furrow irrigation, maximizing water efficiency across large acreage.
Roadway & Subbase Preparation: Establish crown grades and cross-slopes on road subbase lifts, ensuring proper drainage geometry before paving crews arrive.
Athletic Field Construction: Dial in consistent crown and side slopes on soccer fields, baseball infields, and multipurpose turf areas where standing water is unacceptable.
Compatible Accessories
- Topcon LS-80L Laser Receiver — extended detection window for bright-light conditions
- Topcon RC-40 Remote Control — wireless grade adjustment from the machine cab
- Topcon FC-80 Grade Rod Clamp — secure LS-80X mounting on grade rods
- Topcon Rechargeable Battery Pack — extended runtime alternative to alkaline cells
- Replacement Alkaline Battery Kit for RL-HV2S — OEM-spec cells for reliable field performance
Frequently Asked Questions
- Can the RL-HV2S set slope on both axes at the same time?
- Yes. The RL-HV2S supports fully independent dual-axis slope control, allowing you to set different grade percentages on the X and Y axes simultaneously. This is essential for drainage design, crowned surfaces, and complex civil grading applications.
- Is this kit compatible with machine control systems?
- The LS-80X receiver included in this kit can be mounted to grade control masts for basic machine applications such as scrapers, motor graders, and blade attachments. For full automated machine control with in-cab displays, Topcon's dedicated machine control systems and compatible receivers are recommended.
- Why does this kit use alkaline batteries instead of a rechargeable pack?
- The 1051612-21-K1 configuration is specifically designed for crews that prefer alkaline power for its universal availability and no-charging convenience. Alkaline batteries are easy to source at any hardware or supply store, making them ideal for remote jobsites or multi-crew deployments where charging infrastructure is limited.
- What is the working range of the RL-HV2S with the included LS-80X receiver?
- With the Topcon LS-80X receiver, the RL-HV2S delivers a working diameter of up to 2,600 feet under typical field conditions. Bright direct sunlight may reduce effective range; using the receiver's sunshade or switching to a longer-range receiver like the LS-80L can help maintain performance in high-glare environments.
Frequently Asked Questions
Can the RL-HV2S set slope on both axes at the same time?
Yes. The RL-HV2S supports fully independent dual-axis slope control, allowing you to set different grade percentages on the X and Y axes simultaneously. This is essential for drainage design, crowned surfaces, and complex civil grading applications.
Is this kit compatible with machine control systems?
The LS-80X receiver included in this kit can be mounted to grade control masts for basic machine applications such as scrapers, motor graders, and blade attachments. For full automated machine control with in-cab displays, Topcon's dedicated machine control systems and compatible receivers are recommended.
Why does this kit use alkaline batteries instead of a rechargeable pack?
The 1051612-21-K1 configuration is specifically designed for crews that prefer alkaline power for its universal availability and no-charging convenience. Alkaline batteries are easy to source at any hardware or supply store, making them ideal for remote jobsites or multi-crew deployments where charging infrastructure is limited.
What is the working range of the RL-HV2S with the included LS-80X receiver?
With the Topcon LS-80X receiver, the RL-HV2S delivers a working diameter of up to 2,600 feet under typical field conditions. Bright direct sunlight may reduce effective range; using the receiver's sunshade or switching to a longer-range receiver like the LS-80L can help maintain performance in high-glare environments.