Spectra Precision LR30 Machine Display Receiver

The Spectra Precision LR30 series machine receivers are high-performance laser-based grade control tools designed to deliver accurate, real-time elevation feedback from the cab of heavy equipment. These rugged, versatile receivers mount directly onto dozers, backhoes, trenchers, scrapers, and box blades, providing operators with intuitive LED grade guidance for faster, more precise grading.

The LR30 features a 360° laser reception window with a vertical reception height of 171 mm (6.75"), enabling reliable laser beam acquisition from all directions. Five channels of super-bright grade display LEDs indicate high, low, and on-grade positions using a green/red visual system. Operators can choose from three deadband settings—fine (5 mm), standard (12 mm), or wide (32 mm)—based on job tolerance requirements. An out-of-beam warning, display brightness control, and beam averaging function ensure continuous accuracy even in challenging field conditions.

The LR30W adds wireless connectivity and comes paired with the RD20 remote display, giving operators full visibility inside the cab. It can be switched between wireless and wired (RS-485) modes for compatibility with Spectra automatic control boxes.

Key Features

• 360° Laser Reception with 171 mm (6.75") vertical capture height

• 5 Bright LED Channels for easy grade interpretation: high, low, and on-grade

• Selectable Accuracy Modes: Fine (5 mm), Standard (12 mm), and Wide (32 mm)

• Out-of-Beam Indicator helps operators realign quickly

• Beam Averaging Mode smooths fluctuating laser readings

• Wireless Option (LR30W) with RD20 remote display for in-cab visibility

• Up to 75 Hours Battery Life (Alkaline); NiMH options available

• IP67 Dust & Water Rating – jobsite tough and weatherproof

• Drop-Tested to 3m (10 ft) for unmatched durability

• Compatible with Spectra Control Boxes (CB20, CB25, CB30)

• Flexible Mounting – Fits 1.66"–2.00" round pipe or 1.5" square tube

Available Models & What’s Included

LR30 Standard Package

• LR30 Machine Receiver

• Internal Linear LED Display

• NiMH Rechargeable Battery Pack

• Battery Charger

• Carrying Case

LR30-1 Alkaline Package

• LR30 Machine Receiver

• Internal Linear LED Display

• Alkaline Battery Compartment (4 x C-cell)

• Carrying Case

LR30W Wireless Package

• LR30W Wireless Machine Receiver

• RD20 Remote Display (in-cab view)

• NiMH Rechargeable Battery Pack

• Battery Charger

• Carrying Case

The Spectra LR30 series is ideal for contractors who demand durable, accurate, and flexible machine-mounted laser receivers that perform in tough jobsite conditions—whether you need standard display or wireless in-cab feedback.