Description

Professional Rotary Laser Transmitter with Bluetooth Control — Built for Contractors Who Already Have a Receiver

The Spectra LL1505C-BCA gives working contractors exactly what they need and nothing they don't. If you already own a compatible Spectra receiver from a previous kit purchase, or you're running a multi-laser crew where transmitters are the bottleneck, this BCA configuration delivers the full-performance laser head, integrated Bluetooth connectivity, alkaline batteries, and a rugged carrying case — without the cost of a redundant receiver. Whether you're grading a foundation, setting forms, or dropping ceiling grids across a large commercial floor, the LL1505C-BCA performs with the speed, accuracy, and durability that professional contractors demand day in and day out.

Product Overview & Jobsite Applications

The LL1505C-BCA is a self-leveling horizontal rotary laser designed for general construction applications requiring a consistent, accurate reference plane across large areas. Operating at a self-leveling range of ±5°, the unit locks quickly on sloped setups and compensates automatically, reducing setup time on uneven terrain. Bluetooth connectivity allows full remote control of laser functions — spin speed, power, and on/off — directly from your smartphone using the Spectra Precision Layout app, so you're not making trips back to the instrument between layout tasks. With a working range of up to 800 feet in diameter when paired with a compatible receiver, the LL1505C-BCA handles everything from residential slab work to large commercial interiors without breaking a sweat.

Key Specifications

Laser Class: Class IIIa, 635nm visible red beam
Self-Leveling Range: ±5° automatic compensation
Working Range: Up to 800 ft (244 m) diameter with compatible receiver
Rotation Speed: 100, 300, and 600 RPM selectable
Accuracy: ±1/16 in at 100 ft (±1.5 mm at 30 m)
Bluetooth Range: Up to 200 ft (60 m) line-of-sight
Power Source: 4 x AA alkaline batteries (included)
Battery Life: Up to 100 hours at standard rotation
IP Rating: IP54 dust and water resistant
Operating Temperature: -4°F to 122°F (-20°C to 50°C)
Package Includes: Laser transmitter, alkaline batteries, hard carrying case — receiver NOT included

Key Features

Bluetooth Remote Control: Operate spin speed, power state, and scan functions wirelessly from up to 200 ft away via the Spectra Precision Layout app
Fast Self-Leveling: Instrument levels in seconds within the ±5° compensation range, getting your crew productive faster
Variable Rotation Speeds: 100 RPM for slow-scan alignment tasks, 300 RPM for general layout, 600 RPM for maximum visibility at distance
Out-of-Level Alarm: Audible and visible alert if the laser is bumped or disturbed during use — critical on busy jobsites
IP54 Protection: Sealed against dust ingress and water spray for reliable performance through real jobsite conditions
Rugged Carrying Case: Molded hard case protects the instrument during transport and storage between jobs
Receiver-Ready Design: Fully compatible with Spectra HL700 series and other Spectra-compatible grade rod receivers

Job Applications

Foundation & Slab Layout: Set a consistent elevation reference across your entire slab pour. Mount the LL1505C-BCA on a tripod at center, connect your crew's existing receivers to grade rods, and control rotation speed and power remotely as your team moves around the perimeter — no one needs to return to the instrument.

Commercial Interior Ceilings: Drop suspended ceiling grids to a uniform height across large floor plates. The 600 RPM spin speed ensures rapid beam detection with any compatible ceiling receiver, and Bluetooth control lets your finisher adjust the laser from a lift without descending between adjustments.

Site Grading & Drainage Slopes: Combine the LL1505C-BCA with a compatible grade receiver on a machine or hand rod to establish consistent cut and fill elevations across earthwork projects. The long 800 ft working range means fewer instrument moves on larger sites.

Multi-Laser Crew Operations: Running multiple transmitters across a large commercial site? The BCA package lets you add laser coverage to zones where you already have receivers deployed, building out your equipment fleet cost-effectively without duplicating receiver purchases.

Compatible Accessories

Spectra HL700 Laser Receiver — The standard receiver for LL1505-series lasers; recommended if you need to add detection capability
Spectra HL760 Receiver — Extended-range receiver for large open sites and machine control applications
Spectra FR77 Flat Rod Receiver Mount — Mounts the receiver to grade rods for accurate elevation readings
Heavy-Duty Tripod for Rotary Lasers — Stable aluminum tripod rated for outdoor instrument use
Spectra Precision Layout App — Free iOS/Android app for full Bluetooth control of the LL1505C-BCA

Related Guides

Frequently Asked Questions

Does the LL1505C-BCA come with a receiver?: No. The BCA configuration includes the laser transmitter, alkaline batteries, and carrying case only. No receiver is included. This package is designed for contractors who already own a compatible Spectra receiver, such as the HL700 or HL760. If you need a complete kit with a receiver, look for the LL1505C kit configurations available separately.
Which receivers are compatible with the Spectra LL1505C-BCA?: The LL1505C-BCA is compatible with the Spectra HL700 series receivers, including the HL700, HL750, and HL760 models, as well as other Spectra-compatible grade rod receivers. If you are uncertain whether your existing receiver will work, contact Express Tools and we can confirm compatibility before you order.
How does the Bluetooth control work on the LL1505C-BCA?: The LL1505C-BCA pairs with the free Spectra Precision Layout app available for iOS and Android. Once paired via Bluetooth, you can control laser power, rotation speed, and scan functions from up to 200 feet away. This eliminates repeated trips back to the instrument during layout tasks, saving significant time on larger jobsites.
What is the accuracy of the Spectra LL1505C-BCA?: The LL1505C-BCA delivers a leveling accuracy of ±1/16 inch at 100 feet (approximately ±1.5 mm at 30 meters). This meets the tolerance requirements for most general construction applications including slab layout, grading, interior ceiling work, and site control tasks.

Frequently Asked Questions

Does the LL1505C-BCA come with a receiver?

No. The BCA configuration includes the laser transmitter, alkaline batteries, and carrying case only. No receiver is included. This package is designed for contractors who already own a compatible Spectra receiver, such as the HL700 or HL760. If you need a complete kit with a receiver, look for the LL1505C kit configurations available separately.

Which receivers are compatible with the Spectra LL1505C-BCA?

The LL1505C-BCA is compatible with the Spectra HL700 series receivers, including the HL700, HL750, and HL760 models, as well as other Spectra-compatible grade rod receivers. If you are uncertain whether your existing receiver will work, contact Express Tools and we can confirm compatibility before you order.

How does the Bluetooth control work on the LL1505C-BCA?

The LL1505C-BCA pairs with the free Spectra Precision Layout app available for iOS and Android. Once paired via Bluetooth, you can control laser power, rotation speed, and scan functions from up to 200 feet away. This eliminates repeated trips back to the instrument during layout tasks, saving significant time on larger jobsites.

What is the accuracy of the Spectra LL1505C-BCA?

The LL1505C-BCA delivers a leveling accuracy of ±1/16 inch at 100 feet (approximately ±1.5 mm at 30 meters). This meets the tolerance requirements for most general construction applications including slab layout, grading, interior ceiling work, and site control tasks.