Spectra LL1505C

The Spectra LL1505C is a high-performance self-levelling rotating laser designed for precise height control on large construction and civil engineering sites. Offering long-range operation, durable build quality and straightforward setup, it supports accurate levelling, grading and alignment work in demanding environments.

Smart App Control: Integrated Bluetooth for full laser management via the Spectra Laser Remote App.
1200m Working Range: High-precision coverage across 4,000 ft with the HL760 receiver.
Automatic Grade Match: Quickly matches slopes between two points using a radio link to the detector.
Extreme Durability: Survival-tested for 1m drops onto concrete and 1.5m tripod tip-overs.
Flexible Power: Offers 55-hour runtime with NiMH batteries or use of standard D-cells.

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Full Description

The Spectra LL1505C Rotating Laser Level is engineered for projects where reliability, range and accuracy are essential. Commonly used across civil engineering, infrastructure and major construction works, it provides a consistent horizontal reference for levelling and height control over wide working areas. The LL1505C features a fast self-levelling system that automatically establishes a stable level plane, allowing work to begin quickly and reducing the risk of setup errors. When used with a compatible laser receiver such as the HL450, it delivers extended working range, making it well suited to open sites, long runs and large-scale layouts where optical levels may be less efficient. Designed with tough site conditions in mind, the instrument is housed in a rugged, sealed casing to help protect against dust, moisture and general site impacts. Its durable construction makes it suitable for year-round outdoor use, supporting consistent performance even in challenging environments. Simple controls and clear status indicators make the LL1505C easy to operate, helping reduce training time for site teams while maintaining professional-level accuracy. Supplied in a protective carry case, it is ideal for earthworks, concrete and formwork levelling, groundworks, excavation control, and general construction height setting where dependable results are critical.

FAQs

What are the main advantages of the Spectra LL1505C over previous models like the LL300S?

The Spectra LL1505C replaces the LL300S with built-in Bluetooth connectivity for smartphone control via the Spectra Laser Remote App. It offers higher precision of ±1.5mm at 30m and an expanded working diameter of up to 1200 metres when paired with the HL760 receiver.

Can the Spectra LL1505C be used for vertical alignment and layout?

Yes, the LL1505C has tripod threads on both the bottom and back, allowing for vertical mounting. This is ideal for plumb transfers, 90-degree layout, and vertical alignment of structural steel or cladding, making it highly versatile for complex building sites.

How does the Bluetooth functionality improve site efficiency?

The Spectra Laser Remote App allows engineers to manage rotation speed and manual slopes directly from a mobile device. This minimizes trips back to the tripod, allowing adjustments to be made while staying in a trench or machine cab, which significantly boosts efficiency.

Is the Spectra LL1505C available for hire for short-term projects?

Absolutely. The Spectra LL1505C is available in our hire fleet, providing access to the latest Bluetooth technology without upfront ownership costs. Every unit is fully inspected and includes a fresh calibration certificate from a PQS Survey Ltd depot.

Where can I get my Spectra LL1505C serviced or recalibrated in the UK?

PQS Survey Ltd has a network of depots with trained service personnel equipped to handle the advanced calibration of the LL1505C. Regular servicing ensures your 5-year warranty remains valid and the laser maintains peak accuracy in the field.

How does the PlaneMatch feature work with the HL760 receiver?

When paired with the HL760 receiver, PlaneMatch allows the laser to automatically slope the beam to match two existing, unknown elevations. This is the fastest way for groundworkers to find the fall between two points without performing manual slope calculations.

What makes the LL1505C the “most rugged” laser on the market?

The LL1505C features an IP66 rating and a reinforced housing designed to survive a 1-metre drop onto concrete or a 1.5-metre tripod tip-over. This durability reduces the risk of internal damage and downtime on busy construction sites.

What power options are available for the Spectra LL1505C?

The laser comes with a 10,000mAh NiMH rechargeable battery providing up to 55 hours of use. It can be charged inside or outside the laser and can also run on 4 standard D-cell alkaline batteries to prevent work stoppages.

What is the benefit of the selectable rotation speeds (300, 600, 900 RPM)?

Variable speeds tailor the laser to the task: 600 RPM is standard, 900 RPM is best for machine-mounted receivers on excavators for frequent signal updates, and 300 RPM increases beam visibility for indoor or low-light conditions.

Does the Spectra LL1505C include a “Man-Down” or disturbance alert?

The unit features a “Height of Instrument” (HI) Alert. If the laser is jarred or the tripod settles, the rotor stops and a red LED flashes. This prevents “out-of-level” readings, protecting you from costly grading errors.