BOSCH GRL4000-80CH REVOLVE4000 Dual Grade Self-Leveling Laser Package

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At a Glance

Working Radius: Up to 2,600 ft (800 m) with receiver
Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Grade Range: ±10% on X-axis; ±10% on Y-axis (dual slope, independent axes)
Self-leveling Range: ±5°
Rotation Speed: 300, 600, or 1,200 RPM selectable
Connectivity: Bluetooth via free Bosch Leveling Remote App (iOS & Android)

BoschGRL4000-80CHSKU Topcon 1037805-01-SURSKNew

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BOSCH GRL4000-80CH REVOLVE4000 Dual Grade Self-Leveling Laser Package

Name: BOSCH GRL4000-80CH REVOLVE4000 Dual Grade Self-Leveling Laser Package
Brand: Bosch
SKU: Topcon 1037805-01-SURSK
Price: 2049.00 USD
Availability: InStock

$2049.00

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±10% on X-axis; ±10% on Y-axis (dual slope, independent axes) Range

Cover large layout jobs with a ±10% on X-axis; ±10% on Y-axis (dual slope, independent axes) working reach.

±1/16 in. at 100 ft (±1.5 mm at 30 m) Accuracy

Hold grade with a ±1/16 in. at 100 ft (±1.5 mm at 30 m) accuracy rating.

Power Source

Runs on Bosch 18V CORE18V battery (included) or AC adapter for jobsite flexibility.

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Genuine, factory-fresh Bosch equipment with legitimate firmware and calibration documentation.

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30-day returnsUnused equipment in original packaging

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.

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Orders placed before 2 PM CT leave the dock today.

Genuine Gear

Factory-fresh, authentic units with legitimate firmware.

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Quick Answer

What is the Bosch GRL4000-80CH?

The BOSCH GRL4000-80CH REVOLVE4000 Dual Grade Self-Leveling Laser Package is a professional rotating laser level designed for contractors who need precision grading and layout work. It delivers accuracy to ±1/16 in. at 100 ft with dual-slope capability on independent X and Y axes, working radius up to 2,600 ft with receiver, and IP67 weatherproof protection. It's available from Express Tools.

FIELD APPLICATIONS

What contractors use this grade lasers for

Large Site Grading Operations

Bluetooth-Connected Field Management

Complex Utility Installation

PRODUCT OVERVIEW

Product Description

Bosch GRL4000-80CH Revolve4000: Professional Dual-Slope Grading, Now Connected

The Bosch GRL4000-80CH Revolve4000 is a professional-grade connected rotary laser level built for contractors who demand precision across large, complex grading sites. Combining Bluetooth connectivity with independent X/Y dual-slope capability, the GRL4000-80CH lets crews dial in simultaneous grade adjustments from up to 330 feet away using the free Bosch Leveling Remote App. Whether you're grading a commercial pad, setting drainage slopes, or laying out a foundation, this complete kit delivers the range, accuracy, and jobsite durability professionals expect from Bosch.

Overview & Jobsite Applications

Designed for general contractors, site graders, civil crews, and concrete formers, the GRL4000-80CH thrives on large outdoor jobsites where elevation control is critical. The self-leveling system compensates automatically within its leveling range, while the dual-slope mode gives operators independent control over both axes simultaneously — a capability that dramatically speeds up complex drainage and pad grading work. Paired with the included LR40 receiver, the laser punches through bright daylight conditions across a working radius of up to 2,600 feet.

Key Specifications

Working Radius: Up to 2,600 ft (800 m) with receiver
Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Grade Range: ±10% on X-axis; ±10% on Y-axis (dual slope, independent axes)
Self-Leveling Range: ±5°
Rotation Speed: 300, 600, or 1,200 RPM selectable
Connectivity: Bluetooth via free Bosch Leveling Remote App (iOS & Android)
Remote Control Range: Up to 330 ft (100 m) via app or RC40 remote
Power Source: Bosch 18V CORE18V battery (included) or AC adapter
Battery Runtime: Up to 30 hours on single charge
Protection Rating: IP67 — fully dust-tight and waterproof to 1 meter
Operating Temperature: -4°F to 131°F (-20°C to 55°C)

What's in the Kit

GRL4000-80CH Revolve4000 Rotary Laser Unit
LR40 Laser Receiver with mounting bracket and clamp
RC40 Remote Control
Bosch GBA18V40 18V 4.0 Ah CORE18V Battery
Bosch GAL18V-40 18V Battery Charger
Carrying / Storage Case
Target card and documentation

Job Application Use Cases

Site Grading & Drainage Slopes: Set independent X and Y grades simultaneously to establish precise drainage planes on commercial lots, parking areas, and athletic fields without repositioning the instrument.

Concrete Flatwork & Slab Forming: Use the high-accuracy beam and RC40 remote to control grade rod and screed elevations across large concrete pours, keeping crews on grade without constant instrument checks.

Foundation & Footing Layout: The automatic self-leveling and long working radius make the GRL4000-80CH ideal for establishing consistent elevation benchmarks across foundation excavations and footing forms.

Utility & Pipeline Grades: Dial in consistent single-axis slopes for trenching, storm drainage, and utility installation work where maintaining a precise fall-per-foot is critical over long runs.

Compatible Accessories

Bosch BT 150 Elevating Tripod — Adjustable tripod compatible with GRL4000-80CH for freestanding setups
Bosch GR 500 Grade Rod — 5-meter telescoping grade rod for use with LR40 receiver
Bosch LR40 Replacement Receiver — Backup or additional receiver for multi-crew operations
Bosch RC40 Remote Control — Standalone replacement remote for grade and rotation adjustments
Bosch GBA18V80 18V 8.0 Ah CORE18V Battery — Extended-runtime battery for all-day operation

Related Guides

Frequently Asked Questions

Does the GRL4000-80CH work with the Bosch 18V battery system I already own?: Yes. The GRL4000-80CH is powered by Bosch 18V CORE18V batteries, making it fully compatible with the broader Bosch 18V cordless tool ecosystem. The kit includes a GBA18V40 4.0 Ah battery and charger, but any Bosch 18V CORE18V or standard 18V battery will work.
Can I control grade settings remotely without using a smartphone?: Absolutely. The included RC40 handheld remote controls grade adjustments and rotation speed from up to 330 feet away without needing a smartphone or the Bosch app. The Bluetooth app connection is an additional option, not a requirement for operation.
What is the difference between single-slope and dual-slope mode on the GRL4000-80CH?: In single-slope mode, the laser sets a grade on one axis while the other remains level. In dual-slope mode, both the X and Y axes are independently graded at the same time — critical for applications like crowned roads, complex drainage planes, or any surface that must shed water in two directions simultaneously.
Is the GRL4000-80CH rated for outdoor use in wet conditions?: Yes. The GRL4000-80CH carries an IP67 protection rating, meaning it is completely dust-tight and can withstand immersion in up to 1 meter of water for 30 minutes. It is built for active outdoor jobsite conditions including rain and dusty environments.

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.

KIT CONTENTS

What's In The Box

Why Buy This?

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.

TECHNICAL SPECS

Specifications

Technical Specs

Manufacturer data and field-verified measurements.

Working Radius	Up to 2,600 ft (800 m) with receiver
Accuracy	±1/16 in. at 100 ft (±1.5 mm at 30 m)
Grade Range	±10% on X-axis; ±10% on Y-axis (dual slope, independent axes)
Self-leveling Range	±5°
Rotation Speed	300, 600, or 1,200 RPM selectable
Connectivity	Bluetooth via free Bosch Leveling Remote App (iOS & Android)
Remote Control Range	Up to 330 ft (100 m) via app or RC40 remote
Power Source	Bosch 18V CORE18V battery (included) or AC adapter
Battery Runtime	Up to 30 hours on single charge
Protection Rating	IP67 — fully dust-tight and waterproof to 1 meter
Operating Temperature	-4°F to 131°F (-20°C to 55°C)
Working Range	Up to 2,600 ft (800 m) with receiver
Remote Control	Up to 330 ft (100 m) via app or RC40 remote
Power	Bosch 18V CORE18V battery (included) or AC adapter
Battery Life	Up to 30 hours on single charge
IP Rating	IP67 — fully dust-tight and waterproof to 1 meter