Spectra Precision HR320 Laser Receiver and Rod Bracket

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At a Glance

Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Self-leveling Range: ±5°
Working Range: Up to 2,000 ft (600 m) diameter with receiver
Rotation Speed: 100, 300, 600 RPM selectable
Grade Range: 0% to ±25% on single axis
Beam Type: Red visible laser diode

Spectra PrecisionLL300S-RC48SKU 11-813L-CNew

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Spectra Precision LL300S-RC48 PRO Laser level Package with HR320 Receiver, Remote and Rechargeable Batteries

Name: Spectra Precision LL300S-RC48 PRO Laser level Package with HR320 Receiver, Remote and Rechargeable Batteries
Brand: Spectra Precision
SKU: 11-813L-C
Price: 1495.00 USD
Availability: InStock

$1495.00

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±5° Range

Cover large layout jobs with a ±5° 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.

Grade Range

Handles 0% to ±25% on single axis so crews can match design slopes.

Battery Life

Runs on Up to 70 hours on rechargeable NiMH battery pack 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-RC48?

The Spectra Precision LL300S-RC48 PRO Laser level Package with HR320 Receiver, Remote and Rechargeable Batteries is a professional rotary laser level system designed for contractors requiring precision site layout and grading. It delivers ±1/16 in. accuracy at 100 ft with a working range up to 2,000 ft diameter when used with the included HR320 receiver. 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-RC48-PRO is a professional-grade red beam rotary laser kit engineered for contractors who need accurate, fast setups and remote-operated grade control on demanding jobsites. Combining the proven LL300S laser platform with the HR320 digital receiver and the RC402N wireless remote, this kit lets a single operator manage elevation shots and grade settings without leaving the machine or walking back to the instrument — a genuine productivity multiplier on grading, site prep, and foundation work.

Built for Real Jobsite Conditions

The LL300S-RC48-PRO is optimized for contractors working on horizontal leveling and single-axis grade applications including site grading, concrete flatwork, drainage installation, landscaping, and interior fit-out. The instrument's robust housing handles the dust, vibration, and temperature swings of outdoor construction, while the self-leveling system gets you on grade in seconds. Whether you're setting finished floor elevations on a commercial slab or establishing drainage fall across a parking lot, this kit delivers the accuracy and range to get it done right the first time.

Key Specifications

Accuracy: ±1/16 in. at 100 ft (±1.5 mm at 30 m)
Self-Leveling Range: ±5°
Working Range: Up to 2,000 ft (600 m) diameter with receiver
Rotation Speed: 100, 300, 600 RPM selectable
Grade Range: 0% to ±25% on single axis
Beam Type: Red visible laser diode
IP Rating: IP66 — dust-tight and water-resistant
Battery Life: Up to 70 hours on rechargeable NiMH battery pack
Operating Temperature: -4°F to 122°F (-20°C to 50°C)
Weight: Approximately 4.0 lbs (1.8 kg) with battery

What's in the LL300S-RC48-PRO Kit

LL300S Rotary Laser: Self-leveling, dual-grade capable red beam laser instrument
HR320 Digital Receiver: Long-range receiver with audible and visual grade indication, compatible with remote operation
RC402N Wireless Remote Control: Allows single-operator control of instrument settings, grade values, and on/off from up to 330 ft (100 m)
Rechargeable NiMH Battery Pack: Long-life rechargeable pack with AC wall charger included
Receiver Clamp: Adjustable rod clamp for the HR320, compatible with standard grade rods and staffs
Carrying Case: Molded hard-shell case for transport and storage of all kit components
User Manual and Warranty Card

Job Applications

Site Grading and Earthwork: Set your LL300S on a tripod at the center of the site, dial in the design grade via the RC402N from the blade or scraper, and work the entire cut-fill operation without a second person holding the rod — saving labor on every shift.
Concrete Flatwork and Slab Pours: Establish precise finished floor or subbase elevations across large slab areas. The HR320's clear audible signal lets rod men work independently while the foreman monitors pour progress elsewhere on the deck.
Drainage and Utility Trenching: Program a consistent slope percentage for storm drain, sanitary, or irrigation trenching. The remote lets the excavator operator verify depth and grade from the cab without stopping work for manual checks.
Interior Leveling and Suspended Ceilings: Drop rotation speed to 100 RPM and use the red beam for interior layout, suspended ceiling grids, and partition alignment where a visible sweep line speeds layout without chalk lines.

Compatible Accessories

Frequently Asked Questions

How far away can I operate the RC402N remote control?: The RC402N wireless remote has an effective range of up to 330 ft (100 m) under typical site conditions, allowing a single operator to adjust grade settings, rotation speed, and power state from the machine or scraper without returning to the instrument.
Is the LL300S-RC48-PRO suitable for outdoor use in bright sunlight?: Yes. While the red beam is most visible in low-light and indoor conditions, the included HR320 digital receiver extends the working range to 2,000 ft in full daylight. The receiver's audible and LED grade indicators let you work accurately outdoors without needing to see the beam itself.
Can the LL300S run on standard AA or D-cell batteries?: The RC48-PRO kit includes a rechargeable NiMH battery pack that delivers up to 70 hours of runtime per charge. The LL300S platform is also compatible with an optional alkaline battery holder for jobsites where recharging isn't convenient — contact us to confirm current adapter availability.
What is the grade range on the LL300S, and how is it set?: The LL300S supports single-axis grade from 0% up to ±25%. Grade is set directly on the instrument's keypad or — in this PRO kit configuration — remotely via the RC402N, which lets you increment grade values without touching the laser head. Two-axis simultaneous grade is not supported on this model; for dual-grade applications, consider the Spectra Precision LL500 series.

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.

Accuracy	±1/16 in. at 100 ft (±1.5 mm at 30 m)
Self-leveling Range	±5°
Working Range	Up to 2,000 ft (600 m) diameter with receiver
Rotation Speed	100, 300, 600 RPM selectable
Grade Range	0% to ±25% on single axis
Beam Type	Red visible laser diode
IP Rating	IP66 — dust-tight and water-resistant
Battery Life	Up to 70 hours on rechargeable NiMH battery pack
Operating Temperature	-4°F to 122°F (-20°C to 50°C)
Weight	Approximately 4.0 lbs (1.8 kg) with battery
Remote Control	Allows single-operator control of instrument settings, grade values, and on/off from up to 330 ft (100 m)