Topcon RL-HV2S Self-Leveling Dual Grade Laser DB Kit with LS-80X Receiver and Alkaline Batteries

The Professional Standard for Dual Slope Grading

The Topcon RL-HV2S Dual Grade Rotary Laser Kit delivers the simultaneous X and Y axis slope control that serious grading contractors demand. Whether you're pitching a parking lot for ADA-compliant drainage, establishing complex building pad elevations, or managing multi-directional fall across a large site, the RL-HV2S handles it all from a single instrument setup. Paired with the LS-80X dual-grade receiver, this kit gives you the precision, range, and reliability to keep equipment moving and crews productive all day long.

Overview & Jobsite Applications

The RL-HV2S is engineered for contractors who regularly tackle grade work that goes beyond simple single-slope applications. Its ability to independently set slope on two axes eliminates the guesswork and repositioning that slows down complex grading operations. With a working radius of up to 800 meters and automatic self-leveling, this laser integrates seamlessly with machine control systems and grade checkers alike. From commercial site prep to municipal drainage projects, the RL-HV2S shortens layout time and reduces costly rework.

Key Specifications

• Dual Grade Axes: Independent X and Y slope control, simultaneously
• Grade Range: ±10% on both axes simultaneously
• Grade Accuracy: ±1 arc second (0.0003 ft/ft)
• Self-Leveling Range: ±5° automatic
• Working Radius: Up to 800 m (2,600 ft) diameter with detector
• Rotation Speed: 150, 300, or 600 RPM selectable
• Laser Class: Class 3R, 635 nm visible red beam
• Power Source: Rechargeable NiMH battery pack, 35+ hour runtime
• IP Rating: IP66 dust and water resistant
• Operating Temperature: -20°C to +50°C (-4°F to +122°F)
• Included Receiver: Topcon LS-80X dual grade detector

What's in the Kit

• Topcon RL-HV2S Dual Grade Rotary Laser
• Topcon LS-80X Dual Grade Laser Receiver with rod clamp
• Rechargeable NiMH battery pack
• AC adapter / battery charger
• Carrying case
• Operator's manual

Job Applications

Parking Lot Construction & Resurfacing: Set a precise two-directional pitch in a single instrument setup to ensure positive drainage toward inlets and eliminate ponding — critical for ADA compliance and long-term pavement life.

Building Pad & Foundation Layout: Establish complex multi-slope grades for building pads that require fall in more than one direction, cutting layout time significantly compared to using a transit or single-axis laser.

Earthwork & Mass Grading: Mount the LS-80X receiver on a grade rod or machine mast and use the RL-HV2S to control cuts and fills across large earthwork areas with consistent, repeatable accuracy.

Retention Pond & Drainage Channel Grading: Dial in the bottom slopes of detention basins and drainage infrastructure where both longitudinal and transverse grades must be held tight to ensure proper flow and regulatory approval.

Compatible Accessories

• Topcon LS-80X Dual Grade Receiver (replacement)
• Topcon RC-40 Wireless Remote Control
• Topcon RD-4ML Machine Display
• Topcon Laser Tripod — Heavy-Duty Contractor Grade
• Replacement NiMH Battery Pack for RL-HV2S
• Topcon Grade Rod with LS-80X Sliding Bracket

Related Guides

• How to Set Dual Grade with the Topcon RL-HV2S — Step-by-Step
• Rotary Laser vs. GPS Grade Control: Which Is Right for Your Project?
• Parking Lot Drainage Layout Guide for Contractors
• Understanding Laser Receiver Sensitivity Modes for Machine Control

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 specifically designed to control X and Y axis grades independently and simultaneously, which is the defining advantage of a dual-grade laser. You can set, for example, a 1.5% cross-slope and a 0.8% longitudinal grade without moving the instrument.

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

The RL-HV2S supports a grade range of ±10% on both axes simultaneously. This covers the vast majority of commercial and civil grading applications, including aggressive drainage slopes and ADA ramp construction.

Does the LS-80X receiver work with other Topcon lasers?

The LS-80X is a dual-grade capable receiver optimized for use with Topcon dual-slope lasers like the RL-HV2S. It is also compatible with standard single-grade Topcon rotary lasers, making it a versatile addition to your instrument inventory.

How long does the battery last on a full charge?

Topcon rates the RL-HV2S battery pack for over 35 hours of continuous operation at standard rotation speeds. In typical job-site use with intermittent operation, most crews get multiple full days of work from a single charge.