The Topcon RL-SV1S RB Kit delivers dependable single-grade horizontal laser control packaged with everything a contractor needs for full-day site operations — including the LS-80L laser receiver and a complete rechargeable battery system. Built for the demands of grading, sitework, concrete flatwork, and drainage layout, the RL-SV1S self-levels quickly, holds calibration in tough conditions, and keeps your crew on grade without interruption. Whether you're running a road base, pouring a slab, or cutting drainage swales, this kit puts precision in your hands from the moment you open the case.
Product Overview
The Topcon RL-SV1S is a professional-grade rotary laser engineered for contractors who need accurate single-slope control across demanding horizontal applications. With a self-leveling range of ±5° and a grade range of ±5%, it handles the majority of site grading scenarios with push-button ease. The RB (Rechargeable Battery) configuration eliminates the recurring cost and downtime of disposable batteries — a practical upgrade for crews running extended shifts or back-to-back jobs. The included LS-80L receiver extends usable range outdoors to 800 meters in diameter, making this kit equally effective on large commercial sites and smaller residential builds.
Key Specifications
- Model: Topcon RL-SV1S
- Laser Class: Class 3R, 635nm red beam
- Self-Leveling Range: ±5°
- Grade Range: 0% to ±5% single axis
- Leveling Accuracy: ±1mm at 10m (±3/32" at 30')
- Working Range (with receiver): 800m diameter
- Rotation Speed: 300 / 600 / 1200 RPM selectable
- Power Source: Rechargeable battery pack (RB system)
- Battery Life: Up to 50 hours per charge (low rotation speed)
- Dust & Water Protection: IP66 rated
- Operating Temperature: -20°C to +50°C (-4°F to +122°F)
- Weight: Approx. 2.7 kg (5.9 lbs) with battery
What's in the Kit
- Topcon RL-SV1S single grade rotary laser transmitter
- LS-80L laser receiver with rod clamp and carrying case
- Rechargeable battery pack (RB system) — replaces standard AA cells
- BC-65A battery charger for rapid recharge between job phases
- Carrying case for protected transport and storage
- Operator's manual and warranty documentation
Job Applications
- Site Grading & Earthwork: Establish a precise horizontal plane across cut-and-fill operations, ensuring consistent grade for roads, pads, and site preparation before construction begins.
- Concrete Flatwork: Control slab elevation for driveways, warehouse floors, and residential pours. The RL-SV1S accuracy keeps concrete crews on spec and reduces costly callbacks.
- Drainage & Utility Layout: Set accurate single-slope grades for storm drain channels, retention basin edges, and utility trench bottoms where proper fall is critical to performance.
- Landscape Grading & Athletic Fields: Achieve smooth, consistent slopes for sports field drainage, lawn grading, and hardscape base preparation where a subtle grade makes all the difference.
Compatible Accessories
Frequently Asked Questions
- Does the Topcon RL-SV1S RB Kit include everything needed to start working on-site?
- Yes. The RB Kit includes the RL-SV1S laser transmitter, LS-80L receiver with rod clamp, rechargeable battery pack, BC-65A charger, and a carrying case. You'll need a laser tripod and grade rod, which are available separately on our site.
- What is the effective outdoor range of the RL-SV1S with the LS-80L receiver?
- With the LS-80L receiver, the working diameter is 800 meters (approximately 2,600 feet), making it suitable for large commercial grading sites and extended layout operations under bright outdoor conditions.
- Can the RL-SV1S be used for sloped applications like drainage or road crowns?
- The RL-SV1S supports single-axis grade from 0% to ±5%, which covers the majority of drainage slopes, parking lot grades, and residential grading applications. For dual-axis simultaneous slope control, consider the Topcon RL-SV2S.
- How long does the rechargeable battery last, and how do I recharge it?
- At low rotation speed (300 RPM), the rechargeable pack delivers up to 50 hours of runtime. The included BC-65A charger restores a full charge typically within a few hours, allowing quick turnaround between job phases or overnight recharging at the shop.
