# Spectra Precision LR30W-DM Machine Display Receiver w/ Bulldozer Mast and RD20 Remote Display
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Overview
The Spectra Precision LR30W-DM is a complete bulldozer grade control solution that combines precision laser detection with intelligent machine display technology. This pre-configured system includes an LR30W machine display receiver, factory-mounted bulldozer mast assembly, and wireless RD20 remote display—eliminating field fabrication and reducing deployment time by up to 75%. Designed for contractors who demand reliable, repeatable grade accuracy, the LR30W-DM delivers visual and audible guidance for blade positioning with millimeter-level precision across rotating laser ranges up to 2,600 feet diameter.
The integrated design philosophy means your operators can set up faster, work more confidently, and achieve finish-grade specifications with fewer passes. The wireless remote display allows operators to monitor grade status from the cab while the rugged mast assembly withstands the punishment of production dozer work. Whether you're mass grading building pads, cutting precise slopes for drainage, or establishing subgrade elevations for paving, this turnkey system transforms grade control from guesswork into a measurable, cost-saving process.
Key Specifications
- Laser Detection Range: Up to 2,600 ft (800 m) diameter working area with compatible rotating lasers
- Grade Accuracy: ±1/16 inch (1.5 mm) at typical dozer working speeds
- Detection Window: Dual laser windows with 180mm vertical capture range for fast acquisition
- Display Technology: High-visibility LED arrays on both receiver and RD20 remote with on-grade indicators
- Mast Height: 10 ft (3 m) bulldozer mast with quick-release mounting bracket
- Wireless Range: RD20 remote operates up to 300 ft (90 m) from receiver unit
- Power System: Rechargeable Li-ion battery with 40+ hour runtime; 12V DC vehicle power optional
- Operating Temperature: -4°F to 140°F (-20°C to 60°C)
- Durability Rating: IP67 waterproof and dustproof; survives 6 ft drops to concrete
- Audio Alert: Variable pitch tone indicates blade position relative to grade
- Grade Modes: Single slope, dual slope, and automatic blade tracking
- Compatibility: Works with all Spectra rotating lasers and most competitive red-beam systems
What's in the Kit
- LR30W Machine Display Receiver with wireless capability
- Factory-assembled bulldozer mast (10 ft / 3 m height) with reinforced mounting bracket
- RD20 Wireless Remote Display with cab mounting hardware
- Rechargeable lithium-ion battery pack with charging cradle
- AC wall charger (110-240V) and 12V DC vehicle charging cable
- Universal bolt-on mast clamp assembly with adjustment hardware
- Protective receiver rod clamp with vibration dampening
- Operator's manual with quick-start laminated guide
- Heavy-duty storage case with custom foam insert
- Two-year manufacturer's warranty with extended support options
Job Applications
- Building Pad Mass Grading: Establish precise pad elevations across large development sites with consistent accuracy, reducing over-excavation waste and eliminating the need for string lines or repeated staking. Operators maintain grade confidence across the entire pad without waiting for rod checks.
- Road and Highway Subgrade: Cut precise subgrade elevations for asphalt or concrete paving projects where tight tolerances directly impact pavement performance and material costs. The wireless display lets operators verify grade status without leaving the cab during long cutting passes.
- Sports Field and Golf Course Construction: Create complex drainage slopes and crowned surfaces that meet design specifications for athletic facilities. The sensitive grade indication helps operators achieve the subtle elevation changes critical for proper water management on turf surfaces.
- Parking Lot Development: Grade large parking areas with designed drainage patterns, ensuring proper water flow to collection points while minimizing material movement. The precision guidance reduces the need for finish grading corrections that delay paving schedules.
- Detention Pond and Drainage Channel: Excavate precise slopes on basin floors and channel inverts where water flow depends on accurate grade control. Visual feedback helps operators maintain consistent slopes on angled cuts where traditional methods require constant surveying.
- Solar Farm Site Preparation: Level extensive panel installation areas to engineered tolerances while tracking elevation changes across rolling terrain. The long-range capability covers large work areas without relocating the laser base station, maximizing production efficiency.
Compatible Accessories
- Spectra Precision LL500 Self-Leveling Rotary Laser – Ideal companion laser with 1,600 ft range
- Spectra Precision LL400 Construction Laser – Budget-friendly laser option for smaller sites
- LR30W Alkaline Battery Pack – Backup power solution for extended shifts
- Heavy-Duty Mast Extensions – 12 ft and 14 ft options for extreme cut/fill applications
- RD20 Adjustable Cab Mount – Upgraded mounting bracket for difficult cab configurations
- Adjustable Receiver Rods – Custom length rods for specialized applications
Related Guides
- Complete Guide to Choosing a Grade Control System for Dozers
- Laser Receiver Setup and Calibration Best Practices
- How Grade Control Technology Improves Dozer Productivity by 40%
- Rotating Laser Compatibility and Range Planning Guide
FAQ
- Can I use this system with my existing rotating laser?
- Yes, the LR30W-DM is compatible with all Spectra Precision rotating lasers and most competitive red-beam systems operating at standard rotation speeds. The dual laser windows detect both single-slope and dual-slope laser beams. If you're using a green-beam laser or non-standard rotation speed, contact our technical team to verify compatibility before purchase.
- How difficult is it to mount the mast assembly on my dozer?
- The bolt-on mast design typically installs in 15-20 minutes using common hand tools. The universal mounting bracket adapts to most bulldozer ROPS configurations without drilling or welding. The kit includes all necessary hardware and an illustrated installation guide. For dozers with non-standard ROPS, we offer custom mounting solutions—contact us with your machine make and model for guidance.
- What's the advantage of the wireless remote display versus just using the main receiver?
- The RD20 remote display mounts inside the cab at the operator's eye level, eliminating the need to constantly look back at the mast-mounted receiver. This improves operator comfort during long grading sessions, increases productivity by keeping attention forward, and enhances safety by reducing neck strain and distraction. The wireless connection means no cables running from mast to cab that can snag or disconnect.
- How long does the battery last, and can I charge it in the field?
- The lithium-ion battery provides 40+ hours of continuous operation under normal conditions (this decreases in extreme cold). The kit includes both AC and 12V DC chargers, so you can recharge from a vehicle, generator, or wall outlet. A full recharge takes approximately 4 hours. Many contractors keep a spare battery pack for multi-shift operations or charge during lunch breaks to ensure all-day runtime.
