Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit with LS-80X Receiver, Tenths Rod and Tripod / Alkaline - 1051612-21-K1

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At a Glance

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)

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Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit with LS-80X Receiver, Tenths Rod and Tripod / Alkaline

Name: Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit with LS-80X Receiver, Tenths Rod and Tripod / Alkaline - 1051612-21-K1
Brand: Topcon
SKU: 1051612-21-K1
Price: 2195.00 USD
Availability: InStock

$2195.00

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±5° on both axes Range

Cover large layout jobs with a ±5° on both axes working reach.

±1 arc second (single axis); ±1.5 arc seconds (dual axis) Accuracy

Hold grade with a ±1 arc second (single axis); ±1.5 arc seconds (dual axis) accuracy rating.

Grade Range (X & Y)

Handles ±10% on both axes independently so crews can match design slopes.

Power Source

Runs on Alkaline batteries (included) for jobsite flexibility.

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Continuous grade control, no stakes

Eliminates grade staking between passes. One operator on the machine vs. 2-3-person conventional crew.

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Quick Answer

What is the Topcon RL-HV2S?

The Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit is a professional-grade rotating laser system designed for grading and leveling applications on job sites. It features a self-leveling range of ±5° on both axes, dual grade capability up to ±10% independently, and operates up to 2,600 ft diameter with the included LS-80X receiver. It's available from Express Tools.

FIELD APPLICATIONS

What contractors use this grade lasers for

Motor Grader Control

Automatic blade control for road base and subgrade

Dozer Earthwork

Push-to-grade for rough cut and finish passes

Pipe Trench Grading

Set trench bottom elevation for gravity pipe installation

Drainage Work

Parking lot drainage, swales, retention basins

PRODUCT OVERVIEW

Product Description

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.

Why This Equipment

Dual Grade Control

Control two slopes simultaneously for crowns, swales, and complex drainage layouts.

Machine Ready

Pairs with machine receivers for dozer, grader, and scraper grade control.

IP67 Rated

Weatherproof for outdoor use in rain, dust, and construction site conditions.

High Accuracy

±0.1mm/m grade accuracy — holds tolerance through a full working day.

Why Buy This?

Continuous grade control. No continuous labor.

Grade stakers cost $50–80/hr and disappear between passes. A dual-slope grade laser installs once and controls your blade automatically — through every cut, every fill, every pass. That's the math that makes grade lasers one of the fastest ROI investments in earthwork.

Professional contractors specify dual-grade systems for a reason: single-grade units work for straight drainage. The moment a job has a crown, a swale, or a complex parking lot slope — you need dual-grade.

Buying from Express Tools means authorized, factory-fresh inventory, legitimate firmware, and technical knowledge when you need it.

TECHNICAL SPECS

Specifications

Technical Specs

Manufacturer data and field-verified measurements.

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)
Grade Range	±10% on both axes independently
Power	Alkaline batteries (included)