Topcon RL-HV1S Self-Leveling Single Grade Laser DB Kit with LS-80X Receiver and Alkaline Batteries

Complete Single-Grade Rotary Laser System for Horizontal and Vertical Layout

The Topcon RL-HV1S Deluxe Bracket (DB) Kit is a field-ready rotary laser package built for contractors who need reliable elevation control and layout accuracy on every job. The RL-HV1S is a self-leveling rotary laser that operates in both horizontal and vertical modes, making it a versatile single tool for grade work, interior layout, and alignment tasks. Express Tools supplies this complete kit with the LS-80X digital receiver, an aluminum grade rod, a heavy-duty tripod, and a protective carrying case — everything needed to get on grade from day one.

Product Overview & Jobsite Applications

The RL-HV1S is engineered for single-grade slope applications, allowing operators to set a grade in one axis for drainage, concrete flatwork, site grading, and foundation layout. Its automatic self-leveling system compensates within ±5° and locks out if the instrument is set up beyond that range, preventing undetected errors on critical work. With a 600-meter diameter working range and a 600 RPM rotation speed, the RL-HV1S delivers a bright, detectable beam that pairs efficiently with the included LS-80X receiver in bright outdoor conditions. Vertical mode enables plumb wall layout, door and window alignment, and column plumb checks without a second instrument.

Key Specifications

• Accuracy: ±1mm at 10m (±1/16" at 30ft)
• Self-Leveling Range: ±5°
• Grade Range (Single Axis): 0% to ±10%
• Working Range: Up to 600m diameter (with receiver)
• Rotation Speed: 300 / 600 RPM (selectable)
• Dust & Water Protection: IP66 rated
• Battery Life: Approximately 100 hours (alkaline D-cell)
• Laser Class: Class 3R, 635nm visible red beam
• Receiver Included: Topcon LS-80X digital readout receiver
• Kit Includes: Tripod, aluminum grade rod, carrying case

What's in the Kit

• Topcon RL-HV1S Rotary Laser: Self-leveling horizontal/vertical single-grade laser with IP66 protection
• Topcon LS-80X Receiver: Digital numeric display shows cut/fill offset from grade, works in direct sunlight up to 600m
• Aluminum Grade Rod: Contractor-grade leveling rod for receiver mounting and elevation reference
• Heavy-Duty Tripod: Adjustable aluminum tripod for stable instrument setup on varied terrain
• Protective Carrying Case: Molded case for secure transport and storage of the complete kit
• Batteries & Documentation: Alkaline batteries and operator manual included

Job Applications

Site Grading & Drainage: Set a single-axis grade to establish drainage slopes for parking lots, driveways, and site pads. The RL-HV1S single-grade function lets operators dial in the exact slope percentage for proper water runoff without manual calculations at each setup.

Concrete Flatwork & Foundation Layout: Use horizontal mode to establish a consistent elevation reference across a slab or foundation, then confirm elevations at multiple points using the LS-80X receiver mounted on the grade rod for fast, repeatable checks.

Interior Layout & Framing: Switch to vertical mode for partition wall alignment, column plumb, and door/window header layout inside structures. The RL-HV1S eliminates the need for a separate plumb laser on interior finish work.

Utility & Pipeline Slope Control: Establish a consistent grade for trenching and pipe installation work. The grade setting capability in a single axis is ideal for storm drain, sewer, and irrigation line installations requiring a precise, sustained slope.

Compatible Accessories

• Topcon LS-80X Replacement Receiver
• Topcon RC-250 Remote Control for RL-HV1S
• Topcon LS-80L Receiver with Large Display
• Aluminum Elevator Tripod — Heavy Duty
• Replacement Alkaline Battery Pack (D-Cell)
• Topcon Laser Detector Clamp / Rod Clamp

Related Guides

• How to Set Grade with a Single-Axis Rotary Laser
• RL-HV1S vs RL-H4C: Which Topcon Laser Is Right for Your Job?
• Using the LS-80X Receiver for Cut/Fill Grading
• Rotary Laser Setup Tips for Concrete Flatwork

Frequently Asked Questions

Can the RL-HV1S set grade in two axes simultaneously?

No. The RL-HV1S is a single-grade laser, meaning it can set a slope in one axis only. For dual-axis grade control in both X and Y simultaneously, you would need a dual-grade laser such as the Topcon RL-H5A or similar. For most drainage and pipeline applications, single-axis grade control is sufficient.

What is the difference between the DB kit and a standard kit?

The DB designation stands for Deluxe Bracket kit. It indicates this package includes the LS-80X receiver with a bracket/clamp for mounting to a grade rod, in addition to the tripod, grade rod, and carrying case. It is a more complete out-of-the-box package compared to a laser-only or laser-plus-receiver configuration.

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

Yes. The Topcon LS-80X is compatible with the full range of Topcon red-beam rotary lasers, including other RL-H and RL-HV series models. It is not designed for use with green-beam lasers or lasers from other manufacturers without verification of beam wavelength compatibility.

What happens if the RL-HV1S is set up on uneven ground beyond its leveling range?

If the instrument is placed on a surface that exceeds its ±5° self-leveling range, the RL-HV1S will stop rotating and trigger an audible/visual out-of-level alert. This lockout prevents the instrument from projecting an inaccurate grade reference, protecting the integrity of your work. Simply reposition or adjust the tripod legs to bring the unit within the leveling range.