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Topcon Machine Control Kit with RL-HV2S Self-Leveling Dual Grade Laser, Deluxe LS-100D Receiver, Inch Rod, Tripod / Rechargeable - Machine Receiver and Magnetic Mount - Model
±10% on both axes simultaneously Range
Cover large layout jobs with a ±10% on both axes simultaneously working reach.
±10 arc seconds automatic self-leveling Accuracy
Hold grade with a ±10 arc seconds automatic self-leveling accuracy rating.
Power
Runs on Rechargeable battery system; runtime suitable for full shift operation for jobsite flexibility.
Authorized Topcon Dealer
Genuine, factory-fresh Topcon equipment with legitimate firmware and calibration documentation.
Continuous grade control, no stakes
Eliminates grade staking between passes. One operator on the machine vs. 2-3-person conventional crew.
Authorized Dealer
Genuine equipment sourced straight from manufacturer partners.
Ships Same Day
Orders placed before 2 PM CT leave the dock today.
Genuine Gear
Factory-fresh, authentic units with legitimate firmware.
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Authorized-dealer pricing on every unit — request a quote anytime.
Kit Builder
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Answer a few job questions and our Kit Builder assembles the full setup — receiver, rod, tripod, and case matched to your workflow.
Quick Answer
What is the Topcon RL-HV2S?
The Topcon Machine Control Kit with RL-HV2S Self-Leveling Dual Grade Laser, Deluxe LS-100D Receiver, Inch Rod, Tripod / Rechargeable - Machine Receiver and Magnetic Mount - Model is a Topcon Grade Laser with ±10% on both axes simultaneously grade range and ±10 arc seconds automatic self-leveling leveling accuracy. It's available from Express Tools as an authorized Topcon dealer with same-day shipping on in-stock orders.
What contractors use this grade lasers for
Pipe Grade Establishment in Sewer and Drainage Work
Sanitary and storm sewer contractors use the LT8-300LTU to establish accurate pipe slopes from grade reference points, ensuring installations meet design specifications and municipal code requirements. The 360-degree telescope allows operators positioned in trenches to sight both upstream and downstream reference marks without relocating the instrument, accelerating grade verification on long pipeline runs.
Manhole and Underground Utility Alignment
Utility contractors rely on the LT8-300LTU to line up reference points for manhole placement and utility trench alignment in congested subsurface work. Direct below-instrument sighting eliminates the need for operators to exit confined spaces repeatedly, reducing exposure time and improving workflow efficiency on utility installation projects.
Below-Grade Reference Point Lining
Municipal and grading contractors use the instrument to establish and confirm below-grade reference points for slope verification and elevation control. The 26X magnification ensures precise target identification in dim underground conditions, preventing alignment errors that would require costly rework.
Confined Space Pipe Laser Applications
Contractors operating pipe lasers in tight underground environments use the LT8-300LTU to verify laser grade and confirm pipe elevation without leaving the confined space. The specialized 360-degree design streamlines the grade confirmation process in manholes, pump stations, and other restricted-access installations.
Storm and Combined Sewer System Installation
Contractors installing storm and combined sewer systems depend on the LT8-300LTU to maintain consistent grades across multiple sections and ensure proper drainage slope. The instrument's precision optics and direct sighting capability reduce setup time and minimize grade-related defects that would delay system testing and inspection.
Product Description
The Topcon 1051612-22-K2-LS-B200W-MM is a purpose-built excavation package that puts real-time cut/fill grade information directly in front of your machine operator — without the cost of a full 3D GPS system. Pairing the field-proven RL-HV2S dual grade rotating laser with the LS-B200W wireless machine-mounted receiver and the LS-100D handheld rod receiver, this kit covers both cab-based grading and traditional grade rod work on the same job. Whether you're cutting utilities, benching pads, or maintaining slope on a drainage channel, this system delivers the accuracy and flexibility that working contractors depend on.
System Overview & Jobsite Applications
At the core of this package is the RL-HV2S, a self-leveling dual-grade laser capable of projecting a precisely inclined plane in both the X and Y axes simultaneously — ideal for crowned roads, sloped pads, and complex grading profiles. The LS-B200W receiver mounts directly to the boom or blade of an excavator or dozer, transmitting grade data wirelessly to an in-cab digital display. Operators get instant visual feedback on cut and fill without stopping to check grade manually, tightening cycle times and reducing over-excavation. The included LS-100D handheld receiver keeps your rod crew productive alongside the machine, confirming elevations, setting offsets, and checking finished grade without interrupting machine operation.
Key Specifications
- Laser Model: Topcon RL-HV2S Self-Leveling Dual Grade Rotating Laser
- Grade Range: ±10% on both axes simultaneously
- Leveling Accuracy: ±10 arc seconds automatic self-leveling
- Operating Range: Up to 800m diameter (single receiver)
- Machine Receiver: LS-B200W Wireless Machine-Mounted Receiver
- Wireless Transmission: Integrated wireless link between LS-B200W and in-cab display (no cable runs on machine)
- Handheld Receiver: LS-100D with digital numeric readout and audible grade indication
- Mounting: Magnetic mount included for tool-free setup on steel machine components
- IP Rating: Dust and water resistant construction on all components
- Power: Rechargeable battery system; runtime suitable for full shift operation
What's in the Kit
- Topcon RL-HV2S Dual Grade Self-Leveling Rotating Laser
- LS-B200W Wireless Machine-Mounted Grade Receiver
- In-cab digital display unit for LS-B200W
- LS-100D Handheld Rod Receiver
- Magnetic mount for machine receiver attachment
- Rechargeable battery packs and chargers
- Carrying case for transport and storage
- Operator manual and quick-start documentation
Job Applications
Utility Trench Excavation: Mount the LS-B200W to the excavator boom and dial in your design slope on the RL-HV2S. The operator reads grade continuously in the cab, keeping invert elevation consistent through the full run without repeated manual checks.
Building Pad Preparation: Use the dual-grade capability to set a two-direction fall on a commercial slab or parking lot subgrade. The handheld LS-100D lets your grade checker verify corners and edges independently while the machine works the field.
Road Subgrade & Crowned Surfaces: Program cross-slope and longitudinal grade simultaneously on the RL-HV2S. Dozer operators maintain consistent crown profile across the full width of the road without stopping to pull a string line.
Drainage Channel & Swale Grading: Set a consistent channel fall rate and let the excavator operator track grade in real time. Reduces over-digging and limits material haul-off on tight-margin earthwork contracts.
Compatible Accessories
Frequently Asked Questions
- Does the LS-B200W require a cable connection to the in-cab display?
- No. The LS-B200W uses an integrated wireless link to transmit grade data to the in-cab display unit, eliminating cables across pivot points and machine joints. This significantly reduces setup time and wear-related maintenance on the receiver system.
- Can this package handle two different slopes at the same time?
- Yes. The RL-HV2S is a dual-grade laser, meaning it can be set to independent X-axis and Y-axis grades simultaneously. This is particularly useful for crowned road subgrades, sloped pads with directional drainage, and any surface requiring a compound fall.
- Is the LS-100D handheld receiver usable at the same time as the machine receiver?
- Yes. The LS-100D operates independently on the same laser plane as the LS-B200W, so your grade checker can work alongside the machine without any interference or system switching. Both receivers read from the same rotating laser simultaneously.
- What is the effective working range of this system on a large site?
- The RL-HV2S has an operating diameter of up to 800 meters with a single receiver under normal conditions. For most excavation and grading applications, a single instrument setup will cover the full working area of one machine through an entire shift without repositioning.
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.
What's In The Box
- David White LT8-300LTU Line Transfer Unit
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.
Specifications
Technical Specs
Manufacturer data and field-verified measurements.
| Knowledge Summary | The David White LT8-300LTU Line Transfer Unit is a specialized transit designed for contractors performing below-grade pipe laying and utility work. Unlike standard level-transits, it features a 360-degree telescope allowing direct sighting below the instrument—critical for underground applications. With 26X optics, this rugged instrument excels at establishing accurate pipe grades in manholes, trenches, and confined spaces. Used by pipe layers, utility contractors, and underground construction crews, it streamlines reference point alignment and reduces time spent in confined areas. The innovative design eliminates awkward positioning and additional setup steps, making it indispensable for grade establishment in challenging subsurface environments. |
|---|---|
| Telescope Design | 360-degree with direct below-instrument sight |
| Magnification | 26X optics |
| Primary Application | Below-grade pipe laying and utility work |
| Model | LT8-300LTU |
| Key Feature 1 | 360-degree telescope design for direct below-instrument sighting |
| Key Feature 2 | 26X magnification optics for precision work |
| Key Feature 3 | Specialized for pipe laser applications |
| Key Feature 4 | Rugged, dependable construction |
| Key Feature 5 | Streamlined underground workflow |
| Use Cases | Pipe grade establishment in underground construction; Manhole and utility trench alignment; Below-grade reference point lining; Confined space utility work; Sewer and drainage pipe laying |
| Setup Steps | Position unit at grade reference point | Level the instrument using bubble level | Align 360-degree telescope to target pipe direction | Use direct below-instrument sight for grade confirmation | Establish grade marks for crew reference |
| Pro Tips | Use lens cleaning cloth regularly to prevent fogging in confined spaces | Establish tripod on firm, stable ground for accurate readings | Train crew on 360-degree telescope advantage to minimize setup time | Mark reference points clearly for easy crew communication |
| Compatible Equipment | Pipe lasers; Standard surveying tripods; Grade rods; Measuring tapes |
| Common Issues | Lens fogging in humid underground conditions | Difficulty maintaining level in soft ground | Crew unfamiliarity with 360-degree telescope operation |
| Grade Range | ±10% on both axes simultaneously |
| Leveling Accuracy | ±10 arc seconds automatic self-leveling |
| IP Rating | Dust and water resistant construction on all components |
| Power | Rechargeable battery system; runtime suitable for full shift operation |
Built for Topcon equipment owners
Document machine-control grading
Track blade passes, log finished grade, and produce as-built reports your inspector will accept — straight from the cab or the field.
- Bid-vs-actual production tracking
- Photo documentation per pass
- Calibration & service history
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Topcon Machine Control Kit with RL-HV2S Self-Leveling Dual Grade Laser, Deluxe LS-100D Receiver, Inch Rod, Tripod / Rechargeable - Machine Receiver and Magnetic Mount - Model
$4695.00
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Your equipment. Your data. All in one place.
Gradelog is the field-execution platform built for grading and earthwork crews. Log grade shots, track cut/fill, document phases with photos, and generate as-built reports — from the cab to the office.
- Grade shots & cut/fill tracking per job
- Photo documentation by phase, task, and equipment
- As-built reports ready for inspector sign-off
- AI field assistant — troubleshoot on the jobsite
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