The Bosch GRL4000-80CHV REVOLVE4000 is a professional connected self-leveling rotary laser engineered for contractors who demand long-range accuracy and dual-grade versatility on demanding job sites. With an 800-foot working radius, Bluetooth Smart connectivity, and full dual-grade capability, this system is purpose-built for large-scale earthwork, highway construction, site preparation, and machine control applications where every tenth of a foot counts.
Overview & Jobsite Applications
The REVOLVE4000 brings together industry-leading range with the convenience of smartphone control via the Bosch Leveling Remote app. Whether you're cutting grades on a highway embankment, setting elevation benchmarks across a multi-acre site, or guiding heavy equipment through complex cut-and-fill operations, this laser delivers consistent, reliable performance in harsh outdoor conditions. The fully sealed, IP67-rated housing stands up to dust, rain, and the daily punishment of active construction sites.
Key Specifications
- Model: GRL4000-80CHV
- Working Range: 800 ft (244 m) radius with RC40 receiver
- Self-Leveling Range: ±5°
- Grade Range: ±10% on both X and Y axes simultaneously
- Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
- Rotation Speed: 150 / 300 / 600 RPM selectable
- IP Rating: IP67 dust and water resistant
- Power Source: Bosch 18V CORE18V battery (included) or AC adapter
- Operating Temperature: 14°F to 122°F (-10°C to 50°C)
- Connectivity: Bluetooth Smart for remote operation via smartphone app
What's in the Kit
- GRL4000-80CHV Rotary Laser Unit
- RC40 Remote Control Receiver with clamp
- LR40 Laser Receiver Rod Clamp
- BT400 Adjustable Tripod Bracket
- Bosch 18V CORE18V Battery Pack
- GAL1880CV Battery Charger
- Hard-sided carrying case
- Laser target card and documentation
Job Applications
Grading & Earthwork: Set simultaneous X and Y grades to guide motor graders, scrapers, and compactors across large sites without repeated instrument moves. The 800-foot range keeps a single setup productive all day on highway and airfield projects.
Machine Control Integration: The GRL4000-80CHV pairs seamlessly with grade control systems on dozers and excavators. The RC40 receiver mounts directly to mast systems and provides clear above/below/on-grade indication, reducing operator reliance on manual grade checks.
Pipe & Utility Installation: Use dual-grade mode to establish precise fall percentages for storm drain, sanitary sewer, and utility corridor layouts, eliminating repeated elevation shots and keeping crews moving efficiently.
Site Layout & Benchmark Elevation Transfer: The self-leveling function and Bluetooth remote let a single operator set and verify benchmarks across expansive sites, reducing the need for a two-person crew on elevation transfer tasks.
Compatible Accessories
- RC40 Remote Control Receiver (Replacement)
- BT400 Heavy-Duty Tripod Bracket
- Bosch CORE18V 8.0Ah Battery Pack
- Bosch Laser Target Plate
- Heavy-Duty Grade Rod with Clamp
Related Guides
- How to Set Dual Grade with the REVOLVE4000
- Rotary Laser vs. Grade Laser: Which Do You Need?
- Setting Up Machine Control with a Rotary Laser
- Bosch Leveling Remote App Setup Guide
Frequently Asked Questions
- Does the GRL4000-80CHV work with Bosch's 18V battery platform?
- Yes. The GRL4000-80CHV is powered by Bosch 18V CORE18V batteries, which are compatible across the full Bosch 18V cordless tool lineup. The kit includes one CORE18V battery and charger, and the unit also accepts an optional AC power adapter for stationary use.
- What is the maximum grade this laser can project simultaneously on both axes?
- The REVOLVE4000 supports dual-grade operation with up to ±10% grade on both the X and Y axes at the same time, making it suitable for complex grading tasks such as crowned road surfaces and sloped parking structures.
- Can I control the GRL4000-80CHV from a distance without a separate remote?
- Yes. In addition to the included RC40 remote control receiver, the laser can be operated via the free Bosch Leveling Remote app on iOS and Android devices using Bluetooth Smart. This allows a single operator to adjust grade, rotation speed, and other settings from up to approximately 100 feet away.
- Is the GRL4000-80CHV suitable for indoor use as well as outdoor?
- While the REVOLVE4000 is optimized for long-range outdoor applications, it can be used indoors. However, for typical interior work such as drop ceilings, partition walls, and MEP rough-in, a shorter-range self-leveling laser may be more practical. The GRL4000-80CHV truly excels on open job sites and large civil construction projects.
