Spectra Precision LR20 Laser Receiver Machine Contro 360 Trimble Plumb Indicator


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SKU: f2252790 Category:

Rugged New Laser Receiver for compact machine applications

The Spectra Precision Laser LR20 laser receiver is a rugged, electronic receiver that detects laser light generated by rotating lasers. It works with all common rotating lasers and will detect both visible and invisible beams.

The LR20 laser receiver is designed for use as a standalone display receiver on compact machines such as mini excavators, backhoes and scrapers.

Power to the LR20 receiver comes from NiMH rechargeable batteries. The LR20 receiver is designed to be moved from machine to machine with features and setup options for multiple applications and specifications. The 8-in. laser reception height ensures maximum laser control across the site.

LR20 Standard Features

The Spectra Precision Laser LR20 laser receiver mounts to round masts from sizes .5 to 2 in. O.D. tube. The Spectra Precision Laser Mini Magnetic Mount is ideally suited for mini excavator, backhoe and skid steer applications. Set up the laser in an appropriate location for receiver visibility and efficient machine operation and turn it on.

Designed for constructionShock mounted electronics for stable performance and tough poly carbonate housing for superior knock and drop protection. Sealed housing and battery chamber is designed and built to the most demanding construction industry standards.

Precise laser strike positions More accurate grade control. The LR20 laser receiver provides a continuous, absolute laser strike position to precisely measure the actual height deviation from on grade. This feature gives you the highest accuracy and grade performance.

8-in., 360-degree laser reception Increased working area and range

Polycarbonate housing and elastomer over molding Rugged durability for years of reliable use

Super bright grade display w/green on-grade LEDs Superior depth/elevation indication

Push button setup Ease of use and application flexibility

LR20 Specifications Specification


Beam Reception Range

360 degrees

Operating Range

Over 750 ft radius, laser dependent

Laser RPM

Minimum: 105, Maximum: 1200

Vertical Reception

8 in





Center On-Grade


0.20 in

0.40 in

0.80 in

Offset On-Grade


0.50 in

1.0 in

2.0 in

Plumb-Swing Accuracy

&plusmn, 0.5, &plusmn, 1.5, &plusmn, 2.5

Display Output

Bright or Dim

Power Options

Alkaline – 5 AA Cell Standard

5 AA NiMH battery pack, non field replaceable.

Power Cable 10 -30 V dc

Battery Life Li-Ion

(Continuous in beam)

35 hours

Battery Recharge Time

3 4 hours

Automatic Shutoff

75 minutes with no laser beam

Out-of-Beam Indication

High and Low

Remote Display Option


Automatic Control Option

Not in current state

Dimensions (LxWxD)

Approx. 9.50 x 4.38 x 1.87 in, 2.5 lbs

Mounting Pipe

Large Hook: 1.5 to 2.0 in. OD Tube

Small Hook: .5 to 1.1 in OD Tube

Storage Temperature

-40 F TO +158 F

Unit Drop

‘3 Random Drops Onto Concrete @ 5 ft at Room Temperature


TNL standard profile for pole mounted machine control equipment

Operating Temperature

-4 F to 140 F


2 Years

Standalone display receiver for mini excavators, backhoes and scrapers, skid steer attachments, box blades, pulled scrapers and small dozers.

Allows compact machines to achieve tighter tolerances without the need for a grade checker

Use for general construction grade and depth control, landscaping, building pads, sports fields, concrete flatwork, storm drains, utility

Package Includes:

– LR20 Laser Receiver

– International Charger

– 4 NiMH Rechargeable Batteries

– Charger Adapter

– Quick Reference Guides

– Receiver Manual

– Larger Pole Clamp

– 2 Year Warranty

– and Rugged Yellow Hard Shell Waterproof Carrying Case

Additional information


Spectra Precision

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Spectra Precision LR20 Laser Receiver Machine Contro 360 Trimble Plumb Indicator