Spectra Precision Laser Package with Receiver and Rechargeable Batteries - LL300N-4
The Spectra Precision HL450 Laserometer is a user-friendly tool for measuring elevations with precision on any site. It is compatible with all rotating transmitters and has a digital display that shows elevation with an accuracy of ± 40 mm or ±1.5 inches. The display can be seen on the front and back LCD screens, making it easy to determine the distance from on-grade. Improved productivity is possible by making accurate measurements without having to adjust the rod clamp. This model has a 4-inch reception height, which is twice the industry standard, allowing for quick acquisition of the laser beam. Additionally, it comes with an anti-strobe sensor that prevents interference from construction lights, making it simpler to identify the laser beam signals. The Laserometer is built to withstand the harsh conditions of a construction site, being completely waterproof and able to endure a drop of up to 5-feet onto concrete.
Features
- Fully Automatic self-leveling provides fast and accurate set-up
- Accuracy 3/32-inch at 100 feet
- Working range of 1,650-foot diameter
- Simple one-button operation for quick start up
- Height of Instrument Alert: unit stops rotating when jarred to avoid erroneous readings
- Single axis manual slope mode with 'cross-axis' self-leveling allowing grade matching for basic slope work, while maintaining accuracy in the cross-axis using the (optional) RC601 Remote Control
- Easy grade matching using the (optional) RC601 remote control from the rod position
- Extremely durable and portable
What our Experts Think
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Professional Self‑Leveling Rotary Laser Kit – The Spectra Precision LL300N‑4 combines reliable leveling performance with essential accessories for construction and site work.
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Accurate and Stable Performance – Delivers dependable horizontal accuracy suitable for grading, excavation, and general site leveling, helping reduce rework and manual adjustments.
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Self‑Leveling Saves Time – Automatic self‑leveling ensures fast setup and consistent results even on uneven ground.
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Extended Reach with Receiver – The included laser receiver improves beam visibility in bright conditions and across longer distances for greater jobsite flexibility.
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Rechargeable Power for Efficiency – Rechargeable batteries and charger cut ongoing battery costs and support all‑day operation without interruptions.
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Jobsite Ready – Comes with receiver, rechargeable batteries, and battery charger, giving you a complete kit straight out of the box.
Q&A
Q: What is the Spectra Precision LL300N-4 used for?
A: The LL300N-4 is a professional rotary laser level designed for grading, excavation, foundation work, landscaping, and general construction leveling tasks.
Q: Does the LL300N-4 feature self-leveling?
A: Yes. It has electronic self-leveling within ±5°, ensuring fast setup and accurate horizontal leveling.
Q: What is the accuracy of the LL300N-4?
A: The laser provides precision of approximately ±3/32 in at 100 ft (±2.2 mm at 30 m), ideal for professional job sites.
Q: What is the working range of the LL300N-4?
A: With the included receiver, it offers a range up to 1,650 ft (500 m) diameter, suitable for large indoor and outdoor projects.
Q: What accessories are included in the LL300N-4 kit?
A: The kit includes the LL300N-4 rotary laser, digital laser receiver, rechargeable batteries, battery charger, and a carrying case.
Q: Are the batteries rechargeable?
A: Yes. The kit comes with rechargeable batteries and a charger for extended runtime on the job site.
Q: Is the LL300N-4 suitable for outdoor work?
A: Yes. The receiver ensures accurate laser detection in bright sunlight or over long distances, making it ideal for outdoor leveling and grading.
Q: How durable is the LL300N-4?
A: The laser is built for rugged job-site conditions, with dust and water-resistant housing and a protective rotor cage for reliable operation.
Q: What applications is the LL300N-4 best suited for?
A: It is ideal for grading, site preparation, concrete leveling, excavation, landscaping, and foundation alignment projects.
Maintenance Tips
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Keep Laser Optics Clean: Wipe the laser window with a soft, lint-free cloth to maintain beam clarity and leveling accuracy.
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Protect the Receiver: Keep the receiver free from dust, moisture, and impacts to ensure accurate detection.
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Recharge Batteries Properly: Charge NiMH batteries fully before use and avoid over-discharging to maintain long-term performance.
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Store in Carrying Case: Always store the LL300N-4 and accessories in the protective case to prevent damage during transport.
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Check Calibration Regularly: Inspect horizontal accuracy periodically, especially after drops or heavy job-site use.
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Avoid Harsh Conditions: Do not expose the laser to extreme heat, freezing temperatures, or excessive moisture.
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Mount Securely: Use a stable tripod or surface for precise leveling results.
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Professional Servicing: Use authorized technicians for internal repairs or recalibration to preserve factory accuracy.
Damage 
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