Topcon RL-SV1S Self-Leveling Single Grade Laser DB Kit with LS-80L Receiver - 313990759 (uses Alkaline Batteries)

Topcon RL-SV1S Single Grade Rotary Laser — Professional Kit for Elevation Control

The Topcon RL-SV1S DB Kit gives contractors a dependable, field-proven single-grade rotary laser solution built for everyday horizontal control on active jobsites. Whether you are pouring slabs, grading building pads, or setting batter boards, this kit delivers consistent, repeatable elevation reference with minimal setup time. Backed by Topcon's reputation for rugged construction and precision optics, the RL-SV1S is a go-to choice for contractors who need reliable performance without overpaying for dual-grade complexity they don't require.

Rotary Laser Overview & Jobsite Applications

The RL-SV1S operates in self-leveling mode, automatically compensating for minor tripod settlement and uneven ground conditions — a critical advantage on busy sites where every minute counts. Its visible red laser beam rotates 360 degrees to project a continuous horizontal plane across the entire work area, readable by the included LS-80L remote-sensing receiver at distances well beyond unaided eye visibility. The DB designation confirms this package ships with alkaline batteries, so you can go straight to work out of the box. Ideal applications include concrete flatwork, foundation layout, drainage slope control, general building layout, and interior fit-out leveling.

Key Specifications

• Model: Topcon RL-SV1S
• Grade Capability: Single grade (horizontal reference)
Self-Leveling Range: ±5°
• Accuracy: ±1mm at 10m (±1/16" at 30 ft)
• Operating Range: Up to 800m diameter (2,600 ft) with LS-80L receiver
• Rotation Speed: 600 RPM
• Laser Class: Class 3R, visible red beam
• IP Rating: IP66 — dust-tight and protected against heavy rain
• Battery Life: Approximately 60 hours on alkaline batteries (AA)
• Receiver Included: LS-80L
• Power Source: Alkaline batteries (included)
• Operating Temperature: -20°C to +50°C (-4°F to +122°F)

What's in the DB Kit

• Topcon RL-SV1S Rotary Laser Level — self-leveling single-grade instrument
• LS-80L Digital Receiver — long-range detection with audible and visual grade indicators
• Alkaline Batteries — ready for immediate field use
• Carry Case — molded protective case for transport and storage
• Operator's Manual — English language field reference

Job Applications

Concrete Flatwork & Slab Pours: Set screed rails and verify sub-base elevation across the full pour area from a single instrument setup. The LS-80L receiver clips to a grade rod for rapid checks at any point on the slab.

Foundation & Building Pad Control: Establish a consistent elevation benchmark around a new structure perimeter, transferring reference heights to batter boards or excavation stakes with speed and accuracy.

Drainage & Site Grading: Use the horizontal plane reference to verify positive drainage grades across parking lots, retention basins, and disturbed site areas before finish grading is approved.

Interior Leveling & Fit-Out: Mount the RL-SV1S on an interior tripod to level suspended ceilings, partition walls, door frames, and finish flooring installations in commercial and residential construction.

Compatible Accessories

• Topcon LS-80L Replacement Receiver
• Topcon RC-40 Wireless Remote Control
• Topcon Elevator Tripod — Aluminum
• Topcon GR-1 Grade Rod with Clamp
• Rechargeable Battery Pack for RL-SV1S
• Topcon Laser Target Card

Related Guides

• How to Set Up a Rotary Laser for Concrete Flatwork
• Single Grade vs. Dual Grade Lasers: Which Do You Need?
• Using a Laser Receiver on the Jobsite — Tips & Best Practices
• Topcon RL-SV1S vs. RL-SV2S: Full Comparison Guide

Frequently Asked Questions

Does the Topcon RL-SV1S work outdoors in bright sunlight?

Yes. While the red beam may not be visible to the naked eye in direct sunlight, the included LS-80L receiver detects the laser signal at distances up to 800m diameter in any lighting condition, making it fully functional for outdoor grading and layout work.

Is the RL-SV1S waterproof enough for rain?

The RL-SV1S carries an IP66 rating, meaning it is fully sealed against dust ingress and protected against powerful water jets. It can continue operating through rain and dusty site conditions without damage to internal components.

Can I use the RL-SV1S for slope or grade work?

The RL-SV1S is a single-grade instrument designed for horizontal plane reference. It does not offer manual slope or dual-grade capability. For applications requiring a specific percent of slope in one or two axes, consider the Topcon RL-SV2S or RL-H5A models.

What batteries does the RL-SV1S use, and how long do they last?

The RL-SV1S operates on standard AA alkaline batteries, which are included in this DB kit. Under normal field conditions, battery life is approximately 60 hours, making it practical for multi-day use between changes. Optional rechargeable battery packs are available separately for reduced operating costs.