What is the maximum wireless range between the LR30W receiver and RD20 display?

The LR30W and RD20 maintain reliable wireless communication up to 200 feet (60 meters) in open conditions. Range may be reduced by obstructions like metal structures or electrical interference, but typical construction site conditions rarely affect performance within normal machine operating distances.

Can I use the LR30W with my existing Spectra rotating laser?

Yes, the LR30W is compatible with all Spectra Precision rotating lasers including the HV301, LL300, LL400, and GL series. It detects standard rotating laser beams and works with both single-slope and dual-slope laser setups for versatile grading applications.

How do I mount the RD20 display inside my equipment cab?

The included cab mounting bracket attaches to windshields, dashboards, or metal surfaces using either suction cups or the adjustable bracket system. The bracket allows 360-degree rotation and tilt adjustment so you can position the display at optimal viewing angles regardless of cab configuration.

What happens if the wireless signal is lost during operation?

The RD20 display will show a signal lost indicator if communication is interrupted. The LR30W continues detecting the laser beam and will automatically reconnect when the signal is restored. This fail-safe design prevents operators from unknowingly working with outdated elevation data.

Spectra Precision LR30W Wireless Laser Receiver

Description

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Overview

The Spectra Precision LR30W Machine Display Receiver with Wireless RD20 Remote Display revolutionizes machine control by separating the laser receiver from the display unit. This wireless system enables operators to mount the RD20 display directly in the cab for convenient, real-time monitoring of grade and elevation data without line-of-sight limitations. The LR30W receiver attaches to masts, blades, or buckets to capture laser signals, while wirelessly transmitting positioning information up to 200 feet to the in-cab display. This configuration improves operator efficiency by eliminating the need to leave the cab or crane the neck to view external receivers, reducing errors and accelerating grading, excavation, and leveling operations on construction sites.

Key Specifications

Wireless Range: Up to 200 feet (60 m) between LR30W receiver and RD20 display
Receiver Accuracy: ±1/16 inch (±1.5 mm) at 100 feet under ideal conditions
Display Type: High-visibility LCD with large digits and LED grade indicators
Detection Window: 4.7 inches (120 mm) vertical capture height
Operating Temperature: -4°F to 122°F (-20°C to 50°C)
Power Supply: LR30W operates on 4 D-cell alkaline batteries; RD20 uses rechargeable Li-ion battery
Battery Life: Up to 60 hours (LR30W), up to 20 hours (RD20 display)
IP Rating: IP67 dustproof and waterproof protection
Mounting: Universal bracket fits masts 1-2 inches diameter; magnetic mounting option available
Compatibility: Works with all Spectra rotating lasers (HV301, LL300, LL400 series)

What's in the Kit

LR30W Wireless Machine Receiver with detection window
RD20 Wireless Remote Display unit
Rod/mast mounting bracket with clamp
RD20 rechargeable battery pack and AC charger
In-cab mounting bracket for RD20 display
Protective carrying case
4 D-cell alkaline batteries for LR30W
Quick start guide and user manual

Job Applications

Excavator Grade Control: Mount the LR30W on the excavator bucket and view precise depth readings from the cab-mounted RD20, eliminating over-excavation and reducing material costs while maintaining comfortable seated operation.
Dozer Blade Leveling: Attach the receiver to blade masts to monitor cut/fill elevations wirelessly inside the cab, increasing productivity by 30-40% compared to traditional grade checking methods that require stopping and manual measurements.
Trenching and Utility Installation: Track trench depth and grade continuously without dismounting equipment, ensuring proper slope for drainage and utilities while reducing surveying callbacks and rework.
Foundation and Footings: Monitor elevation during foundation excavation with real-time feedback visible from the operator seat, preventing costly over-dig situations and ensuring accurate subgrade preparation.
Site Grading and Pads: Wireless operation allows operators to work efficiently across large sites, maintaining grade accuracy without constant surveyor assistance, reducing labor costs and accelerating project timelines.
Agricultural Land Leveling: Perfect for land plane and scraper operations where maintaining precise elevation across fields is critical for irrigation efficiency and crop yield optimization.

Compatible Accessories

Related Guides

FAQ

What is the maximum wireless range between the LR30W receiver and RD20 display?: The LR30W and RD20 maintain reliable wireless communication up to 200 feet (60 meters) in open conditions. Range may be reduced by obstructions like metal structures or electrical interference, but typical construction site conditions rarely affect performance within normal machine operating distances.
Can I use the LR30W with my existing Spectra rotating laser?: Yes, the LR30W is compatible with all Spectra Precision rotating lasers including the HV301, LL300, LL400, and GL series. It detects standard rotating laser beams and works with both single-slope and dual-slope laser setups for versatile grading applications.
How do I mount the RD20 display inside my equipment cab?: The included cab mounting bracket attaches to windshields, dashboards, or metal surfaces using either suction cups or the adjustable bracket system. The bracket allows 360-degree rotation and tilt adjustment so you can position the display at optimal viewing angles regardless of cab configuration.
What happens if the wireless signal is lost during operation?: The RD20 display will show a "signal lost" indicator if communication is interrupted. The LR30W continues detecting the laser beam and will automatically reconnect when the signal is restored. This fail-safe design prevents operators from unknowingly working with outdated elevation data.

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