Quick Answer
What is the Topcon LS-80L?
See also: Spectra Precision HL760 Laser Receiver
See also: Topcon RC-402 Wireless Laser Receiver
The Topcon LS-80L is a large-face laser receiver for grade rod and machine mounting with a 200mm detection band, ±1mm accuracy, and both audio and visual grade indication for construction layout and machine control.
Topcon LS-80L — Complete Specs, Manual & Guide
Category: Laser Receiver | Brand: Topcon | Model: LS-80L
The Topcon LS-80L is Topcon's standard large-face laser receiver designed for use with grade rods and machine masts on earthmoving and construction sites. The 200mm detection window enables easier laser capture during rough grading, and the large LED display is readable from the cab of a dozer or motor grader. The LS-80L works with Topcon's full range of rotating lasers and most other brands in manual mode.
Topcon LS-80L Full Specifications
| Detection accuracy | ±1mm |
| Detection band height | 200mm total |
| Detection range | Up to 500m radius from laser |
| Display | High-visibility LED bar graph — readable at 30m |
| Audio indication | Beep frequency changes with distance from grade |
| Output | Digital output for automatic blade control |
| Mounting | 25mm diameter mast or grade rod bracket |
| Power supply | 4× AA batteries or 9–28VDC external |
| Battery life | Up to 300 hours |
| Operating temperature | -20°C to +60°C |
| IP rating | IP66 |
Compatible Lasers
- Topcon RL-H5A — High-accuracy horizontal rotating laser
- Topcon RL-200 series — Dual-grade slope laser
- Spectra Precision LL300 — Cross-brand compatible
- Most rotating lasers with 635nm beam — Universal mode
Frequently Asked Questions — Topcon LS-80L
What is the detection accuracy of the Topcon LS-80L?
The LS-80L achieves ±1mm detection accuracy — suitable for finish grading, pipe laying, and concrete flatwork where precise grade control is required. This accuracy is maintained across the full detection range up to 500m.
What is the difference between the LS-80L and the LS-80B?
The LS-80L has a 200mm detection window (the "L" stands for Large), while the LS-80B is a smaller standard-size receiver with a 100mm detection window. The LS-80L is preferred for machine mounting where the large face aids in capturing the laser beam during machine movement.
Can the LS-80L control a screed or dozer blade automatically?
Yes. The LS-80L provides a digital grade control output signal that connects to compatible automatic blade control systems from Topcon, Trimble, and other manufacturers. This enables fully automatic elevation control driven by the laser plane.
How do I mount the LS-80L on a grade rod?
The LS-80L clamps to any standard 25mm grade rod or survey rod using the integrated clamp bracket. Loosen the clamp knob, slide onto the rod at the desired height, and tighten. The receiver can be rotated on the rod to face the laser source.
Related models: Spectra HL760 | Topcon RC-402
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