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At a Glance

Model: Spectra Precision LL300S-CR71-PRO
Self-leveling Range: ±6° automatic self-leveling
Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Operating Range: Up to 2,000 ft diameter (610 m) with CR700 receiver
Rotation Speed: 100, 300, or 600 RPM selectable
Remote Control Range: Up to 200 ft (60 m)

Spectra PrecisionLL300S-CR71SKU 01-ALQR20-DCBNew

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Spectra Precision LL300S-CR71 PRO Laser Package, CR700 Multi-Use Receiver, Remote, Rechargeable, TENTHS-Rod, HD Tripod and Case

Name: Spectra Precision LL300S-CR71 PRO Laser Package, CR700 Multi-Use Receiver, Remote, Rechargeable, TENTHS-Rod, HD Tripod and Case
Brand: Spectra Precision
SKU: 01-ALQR20-DCB
Price: 1770.00 USD
Availability: InStock

$1770.00

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±6° automatic self-leveling Range

Cover large layout jobs with a ±6° automatic self-leveling 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

Runs on Rechargeable NiMH battery pack included; alkaline AA backup compatible for jobsite flexibility.

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Eliminates the grade checker

Grade checkers cost $600-800/day. A rotary laser setup pays for itself in weeks and works indefinitely.

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Quick Answer

What is the Spectra Precision LL300S-CR71?

The Spectra Precision LL300S-CR71 PRO Laser Package is a professional-grade rotating laser level system designed for contractors and surveyors. This complete package delivers ±1/16 in. accuracy at 100 ft with an operating range up to 2,000 ft diameter, making it ideal for large-scale site layout and grading work. It's available from Express Tools.

FIELD APPLICATIONS

What contractors use this rotary lasers for

Site Grading

Cut/fill earthwork, building pad preparation, base compaction

Concrete Flatwork

Slab pours, floor leveling, tilt-up panel layout

Machine Control

Grade control reference for motor graders and scrapers

Foundation Layout

Benchmark elevation transfer, footing forms, stem walls

PRODUCT OVERVIEW

Product Description

The Spectra Precision LL300S-CR71-PRO is a professional-grade rotating laser level kit engineered for survey firms, precision grading specialists, and single-operator crews who need reliable elevation control across demanding jobsite conditions. Combining the proven LL300S self-leveling laser with the CR700 machine-control-compatible receiver, a 5-button remote control, rechargeable battery system, tenths-graduated rod, and heavy-duty tripod, this kit delivers everything needed to establish and maintain grade reference from the first setup to final inspection — without a second crew member on site.

Overview & Jobsite Applications

The LL300S-CR71-PRO is purpose-built for professionals who operate in survey-standard tenths notation and require the flexibility to reposition the laser head remotely from up to 200 feet away. Whether you are setting finish-grade elevations on a large commercial pad, running drainage profiles across agricultural land, or establishing benchmark elevations on a utility corridor, this kit eliminates the back-and-forth communication delays that slow single-person crews. The rechargeable power system reduces alkaline battery consumption and disposal overhead on multi-day projects, making it a practical choice for environmentally conscious contractors and firms managing project compliance documentation.

Key Specifications

Model: Spectra Precision LL300S-CR71-PRO
Self-Leveling Range: ±6° automatic self-leveling
Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Operating Range: Up to 2,000 ft diameter (610 m) with CR700 receiver
Rotation Speed: 100, 300, or 600 RPM selectable
Remote Control Range: Up to 200 ft (60 m)
Power: Rechargeable NiMH battery pack included; alkaline AA backup compatible
Battery Life: Up to 100 hours on rechargeable pack
IP Rating: IP66 dust and water resistant
Receiver: CR700 compatible with machine control and conventional rod work
Rod Graduation: Tenths (0.1 ft) for survey-standard notation

What's in the Kit

Spectra Precision LL300S Self-Leveling Rotating Laser
CR700 Laser Receiver with rod clamp
5-Button RC703 Remote Control
Rechargeable NiMH battery pack and AC wall charger
Tenths-graduated grade rod (survey-standard 0.1 ft increments)
Heavy-duty adjustable tripod
Protective carrying and storage case
Operator manual and quick-start guide

Job Applications

Commercial Site Grading: Set a consistent elevation plane across large commercial pads and parking lots. The remote control lets a single operator adjust the laser elevation reference from the rod location without returning to the instrument, dramatically cutting layout time on pads exceeding an acre.

Agricultural Land Leveling: Run precise drainage profiles and field leveling passes with tenths-based elevation notation that matches survey deliverables and NRCS documentation standards. The 2,000 ft operating diameter covers full field widths in a single setup.

Utility & Pipeline Grade Control: Establish invert elevations and percent-grade references along utility corridors and drainage pipe runs. Tenths rod compatibility ensures readings align directly with engineer-of-record plan sets and as-built documentation.

Foundation & Flatwork Layout: Transfer benchmark elevations to batter boards, footing forms, and slab pour stops with the accuracy and repeatability that survey-standard contractors and inspectors expect on permitted projects.

Compatible Accessories

Frequently Asked Questions

Can the LL300S-CR71-PRO be used outdoors in rain or dusty conditions?: Yes. The LL300S carries an IP66 rating, meaning it is fully protected against dust ingress and resistant to heavy water jets from any direction. It is designed for continuous outdoor use on active construction and grading sites.
Does the remote control work through walls or around equipment?: The RC703 remote control uses infrared transmission and requires a clear line of sight to the laser head. It operates reliably at distances up to 200 ft in open conditions. Obstructions such as equipment, vehicles, or terrain features between the remote and the laser will reduce effective range.
Is the rechargeable battery the only power option?: No. The LL300S-CR71-PRO ships with a rechargeable NiMH pack as the primary power source, but the instrument also accepts standard AA alkaline batteries as a backup. This dual-power compatibility ensures you are never stranded on site due to a depleted rechargeable pack.
Is this kit compatible with machine control grade indicators or only conventional rod work?: The included CR700 receiver is compatible with both conventional grade rod work and machine control mounting brackets. It can be mounted directly to motor grader or dozer blade masts for automated blade control applications, in addition to standard hand-level and layout tasks.

Why This Equipment

Auto Self-Leveling

Compensates for job site movement and setups — no manual leveling required.

Long Range

Reach 2,600+ ft with a receiver — covers large pads and site-wide grading without moving.

IP55+ Protection

Dust-tight and water jet resistant — built for outdoor construction in any weather.

Radio Remote

Change grade or elevation from the cab or anywhere on site without walking back.

Why Buy This?

The right rotary laser pays for itself in weeks.

A grade checker costs $600–800 per day. A quality rotary laser setup eliminates that cost indefinitely — and works faster. One operator with a good laser and receiver can cover ground that used to take a two-person crew.

The gap between a budget unit and a professional-grade one shows up in the field: self-leveling range on uneven pads, IP55+ protection through rain and dust, and radio remote control so you're not walking back to the instrument every time the job moves.

Express Tools is an authorized dealer with genuine, factory-fresh inventory and same-day shipping on in-stock units. We know this equipment and can answer spec questions before you order.

TECHNICAL SPECS

Specifications

Technical Specs

Manufacturer data and field-verified measurements.

Model	Spectra Precision LL300S-CR71-PRO
Self-leveling Range	±6° automatic self-leveling
Accuracy	±1/16 in. at 100 ft (±1.5 mm at 30 m)
Operating Range	Up to 2,000 ft diameter (610 m) with CR700 receiver
Rotation Speed	100, 300, or 600 RPM selectable
Remote Control Range	Up to 200 ft (60 m)
Power	Rechargeable NiMH battery pack included; alkaline AA backup compatible
Battery Life	Up to 100 hours on rechargeable pack
IP Rating	IP66 dust and water resistant
Receiver	CR700 compatible with machine control and conventional rod work
Rod Graduation	Tenths (0.1 ft) for survey-standard notation
Remote Control	Up to 200 ft (60 m)