Spectra Precision LR50W-DM Wireless Laser Machine Display Receiver (NiMH) RD20 Remote Display and DM20 Mast

# Spectra Precision LR50W-DM Wireless Laser Machine Display Receiver (NiMH) RD20 Remote Display and DM20 Mast **Price: $2,625.00**

Overview

The Spectra Precision LR50W-DM represents the pinnacle of wireless laser receiver technology for heavy earthmoving operations. This comprehensive system combines three critical components: the LR50W wireless laser receiver with NiMH battery technology, the RD20 remote display for in-cab grade monitoring, and the DM20 dedicated bulldozer mast engineered for extreme vibration environments. Designed specifically for large-scale earthwork, highway construction, and mass excavation projects, the LR50W-DM eliminates cable runs between the blade-mounted receiver and operator display through reliable 2.4 GHz wireless transmission. The DM20 mast features reinforced construction that withstands the punishing vibration and impact loads generated by dozer blade work, while the RD20 display provides real-time grade information with intuitive LED indicators and numeric readouts. This system excels in applications where traditional wired receivers fail due to cable damage from debris, tension, or environmental exposure. The wireless architecture increases uptime, reduces maintenance costs, and provides operators with immediate grade feedback for precise cutting and filling operations across expansive job sites.

Key Specifications

• Receiver Model: LR50W wireless laser detector with machine control capability
• Wireless Range: Up to 100 meters (328 feet) line-of-sight transmission
• Wireless Frequency: 2.4 GHz digital communication with anti-interference technology
• Detection Diameter: 130mm (5.1 inches) for maximum laser capture area
• Accuracy: ±1mm (±0.04 inches) digital readout resolution
• Battery Type: Rechargeable NiMH battery pack with extended runtime
• Battery Life: 30+ hours continuous operation per charge
• Display Type: RD20 remote with LED grade indicators and LCD numeric display
• Mast Model: DM20 heavy-duty dozer mast with vibration isolation
• Mast Construction: Reinforced steel with anti-vibration dampening system
• Operating Temperature: -20°C to +50°C (-4°F to +122°F)
• IP Rating: IP67 dust-tight and waterproof protection
• Compatible Lasers: All rotating laser levels (red and green beam)
• Grade Indication: Multi-zone LED with audible alerts and numeric depth display
• Update Rate: Real-time continuous tracking with sub-second response

What's in the Kit

• LR50W Wireless Laser Receiver with integrated radio transmitter
• RD20 Remote Display unit with mounting bracket
• DM20 Heavy-Duty Dozer Mast with vibration isolation system
• Rechargeable NiMH battery pack for LR50W receiver
• AC battery charger with international plug adapters
• In-cab mounting hardware for RD20 display
• Machine mounting clamps and hardware for DM20 mast
• Protective carrying case for receiver and display
• Quick start guide and complete operation manual
• Calibration certificate and warranty documentation

Job Applications

• Highway and Road Construction: Ideal for establishing precise sub-grade elevations across miles of roadway where the wireless system eliminates cable snags on debris and allows operators to work efficiently without stopping to repair damaged wiring between blade and cab.
• Mass Excavation and Site Development: Perfect for large commercial, industrial, and residential developments requiring bulk earthwork because the DM20 mast withstands continuous dozer vibration while the wireless display lets operators maintain grade accuracy during aggressive cutting and filling operations.
• Dam and Levee Construction: Exceptionally suited for compacted earth structures where layer thickness control is critical, as the system provides consistent grade reference throughout long passes while the ruggedized mast survives the impact loads from compaction equipment.
• Airport Runway and Taxiway Grading: Designed for the stringent tolerances required in aviation infrastructure where the ±1mm accuracy and wireless reliability ensure operators achieve specification-grade surfaces without the downtime associated with cable maintenance on expansive airfield projects.
• Landfill Cell Construction: Engineered for the harsh, debris-filled environment of waste management facilities where traditional wired systems fail repeatedly, providing reliable grade control for cell base preparation and liner protection layers despite punishing operating conditions.
• Mining Haul Road Development: Built for the extreme duty cycles of mining operations where cable systems cannot survive, delivering continuous grade monitoring for haul road construction and maintenance while withstanding the vibration, dust, and impact inherent to heavy mining equipment.

Compatible Accessories

• Spectra Precision HV302 Interior/Exterior Rotating Laser
• Spectra Precision LL500 Self-Leveling Rotary Laser
• Spectra Precision GL722 Dual Grade Laser with Remote
• NiMH Replacement Battery Pack for LR50W
• RC402N Laser Remote Control
• Universal Machine Control Mast Extensions
• Laser Receiver Mounting Brackets and Hardware

Related Guides

• Wireless vs. Wired Laser Receivers: Cost-Benefit Analysis for Contractors
• Complete Guide to Bulldozer Grade Control System Installation
• Understanding Laser Receiver Accuracy in Machine Control Applications
• Maximizing Battery Life in Wireless Laser Receivers

FAQ

What is the effective wireless range of the LR50W-DM system in real-world construction conditions?

The LR50W-DM provides reliable wireless transmission up to 100 meters (328 feet) in line-of-sight conditions. In typical construction environments with some dust and atmospheric interference, expect consistent performance at 60-80 meters. The 2.4 GHz digital signal includes error-checking and anti-interference technology that maintains connection integrity even when other wireless devices are operating nearby. For operations beyond 80 meters, consider positioning the laser closer to the work area or using a wired receiver alternative.

How does the DM20 mast differ from standard laser receiver masts for dozer applications?

The DM20 features specialized vibration isolation engineering that standard masts lack. It incorporates dampening systems that absorb the severe shock loads and continuous vibration generated by dozer blade work, preventing false readings and extending receiver life. The reinforced steel construction withstands impacts from debris and the lateral forces experienced during aggressive grading. Standard masts often fail in dozer applications due to fatigue cracking and loosened connections, while the DM20 is purpose-built for this demanding environment with heavier-gauge materials and locking mechanisms.

Can I use the LR50W-DM system with my existing rotating laser from another manufacturer?

Yes, the LR50W receiver is universally compatible with rotating lasers from all major manufacturers including Topcon, Trimble, Leica, and others. The receiver detects the rotating laser beam regardless of brand, operating on the fundamental principle of laser plane detection. Both red and green beam lasers are supported. However, you cannot use brand-specific remote control functions, and you'll need to control laser settings directly at the laser unit. For full system integration including remote laser control, pair with Spectra Precision laser models.

What maintenance does the NiMH battery system require, and what is the replacement battery cost?

NiMH batteries in the LR50W require minimal maintenance but benefit from proper charging practices. Avoid storing batteries in discharged state, and fully cycle (discharge and recharge) every 2-3 months to prevent memory effect. Expected lifespan is 500-800 charge cycles or 2-3 years of regular use. Replacement NiMH battery packs cost approximately $180-$240 depending on supplier. To maximize battery life during the workday, the receiver features automatic power management that reduces consumption during inactive periods while maintaining constant wireless connection to the RD20 display.

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