The Spectra Precision LL300S-14 is a mid-range rotating laser level package engineered for contractors who need reliable, repeatable accuracy across standard construction sites. Bundled with the CR700 digital grade readout receiver and powered by readily available alkaline batteries, this kit is ready to work straight out of the box — no proprietary charging required. Whether you're pouring a concrete slab, setting foundation forms, or cutting grades on a commercial site, the LL300S-14 delivers the ±1/8" accuracy and 300-meter working range that experienced crews depend on.
Product Overview
The LL300S-14 combines a self-leveling rotating laser transmitter with the feature-rich CR700 receiver to create a complete horizontal leveling solution. The LL300S transmitter self-levels within a ±5° range and automatically powers down if disturbed beyond that threshold — protecting your grade reference and alerting your crew to any instrument movement. The CR700 receiver mounts to grade rods, machine masts, or stakes and provides both audible and visual grade indicators so operators can work quickly without constant sight-line checks. This is an alkaline-powered configuration, making battery resupply straightforward on any jobsite.
Key Specifications
- Model: Spectra Precision LL300S-14
- Working Range (with receiver): Up to 300 meters (980 ft) diameter
- Accuracy: ±1/8" at 100 ft (±3 mm at 30 m)
- Self-Leveling Range: ±5°
- Rotation Speed: 100 / 300 / 600 RPM selectable
- Grade Capability: Manual grade via 5/8"-11 tripod mount
- Laser Class: Class IIIa / 3R, 635 nm visible red
- Battery Type: Alkaline (AA) — no proprietary charger needed
- Battery Life: Up to 100 hours typical
- Receiver: Spectra CR700 with digital grade display
- IP Rating: Dust and moisture resistant for outdoor use
- Operating Temperature: -20°C to +50°C (-4°F to 122°F)
What's in the Kit
- Spectra Precision LL300S rotating laser transmitter
- CR700 digital grade readout receiver with rod clamp
- Alkaline battery pack (AA configuration)
- Carrying case for transmitter and receiver
- Operator's manual and quick-start guide
Job Applications
Concrete Slab Placement: Set a reliable elevation reference across full slab pours up to 300 meters in diameter. Crews can use the CR700 receiver on a grade rod to verify screed rail heights and check elevation at multiple pour points simultaneously.
Foundation and Footing Layout: Establish a consistent benchmark elevation for form setting, ensuring footings are level across the full foundation perimeter before concrete is placed.
Site Grading and Drainage: Use manual grade capability on the tripod mount combined with the CR700's digital readout to establish drainage slopes and cut/fill grades on parking lots, driveways, and commercial pads.
Interior Floor Leveling: In large warehouse or commercial interiors, the LL300S-14 provides a precise horizontal reference for self-leveling compound work, raised floor systems, and interior concrete topping slabs.
Compatible Accessories
Related Guides
Frequently Asked Questions
- Does the LL300S-14 support grade (slope) work out of the box?
- The LL300S-14 is primarily a self-leveling horizontal laser. Limited manual grade can be introduced by tilting the instrument on a standard 5/8"-11 tripod, but this model is not a dual-grade or programmable grade laser. For dedicated slope work on both axes, consider the Spectra LL500 series.
- What is the difference between the LL300S-14 and the LL300S-2 package?
- The primary difference is the power configuration. The LL300S-14 uses standard alkaline AA batteries, making field battery swaps simple with no charging infrastructure needed. The LL300S-2 typically includes a rechargeable battery and charger. Both use the same LL300S transmitter and CR700 receiver.
- How far can the CR700 receiver detect the laser signal?
- The CR700 receiver can detect the LL300S rotating beam at distances up to 300 meters (approximately 980 feet) in diameter under typical outdoor conditions. Bright direct sunlight at extreme range may reduce detection reliability; always position the receiver perpendicular to the laser plane for best results.
- Is the LL300S-14 suitable for indoor concrete work?
- Yes. The LL300S-14 performs well indoors for topping slabs, floor leveling, and form work. Indoors, the 300-meter range far exceeds typical room sizes, and the visible red beam allows direct naked-eye use at closer distances in low-light conditions, reducing dependence on the receiver for short-range checks.
Frequently Asked Questions
Does the LL300S-14 support grade (slope) work out of the box?
The LL300S-14 is primarily a self-leveling horizontal laser. Limited manual grade can be introduced by tilting the instrument on a standard 5/8"-11 tripod, but this model is not a dual-grade or programmable grade laser. For dedicated slope work on both axes, consider the Spectra LL500 series.
What is the difference between the LL300S-14 and the LL300S-2 package?
The primary difference is the power configuration. The LL300S-14 uses standard alkaline AA batteries, making field battery swaps simple with no charging infrastructure needed. The LL300S-2 typically includes a rechargeable battery and charger. Both use the same LL300S transmitter and CR700 receiver.
How far can the CR700 receiver detect the laser signal?
The CR700 receiver can detect the LL300S rotating beam at distances up to 300 meters (approximately 980 feet) in diameter under typical outdoor conditions. Bright direct sunlight at extreme range may reduce detection reliability; always position the receiver perpendicular to the laser plane for best results.
Is the LL300S-14 suitable for indoor concrete work?
Yes. The LL300S-14 performs well indoors for topping slabs, floor leveling, and form work. Indoors, the 300-meter range far exceeds typical room sizes, and the visible red beam allows direct naked-eye use at closer distances in low-light conditions, reducing dependence on the receiver for short-range checks.