Quick Answer
What is the Topcon RL-SV2S?
See also: Topcon TP-L6G E-03 Laser Diode Temp Warning — Pipe Laser Fix
See also: Topcon TP-L6G E-02 Grade Sensor Fault — Pipe Laser Fix Guide
See also: Topcon TP-L6G E-01 Plumb Error — Pipe Laser Fix Guide
The Topcon RL-SV2S is the standard dual-grade rotary laser for grading contractors — it sets independent X and Y slopes simultaneously, making it the tool of choice for drainage pads, parking lots, and any work requiring cross-slope control.
Topcon RL-SV2S — Complete Specs, Manual & Guide
Category: Rotary Laser | Brand: Topcon | Model: RL-SV2S
The Topcon RL-SV2S is the standard dual-grade rotary laser for grading contractors — it sets independent X and Y slopes simultaneously, making it the tool of choice for drainage pads, parking lots, and any work requiring cross-slope control.
Topcon RL-SV2S Full Specifications
| Accuracy | ±10 arc seconds |
| Grade range | ±10% in both X and Y axes simultaneously |
| Self-leveling range | ±5 degrees |
| Rotation speed | 150, 300, 600 RPM |
| Working range | 800m diameter with receiver |
| Laser class / wavelength | Class 3R / 635nm red |
| IP rating | IP66 |
| Drop resistance | 1 meter onto concrete |
| Battery | BT-65Q rechargeable Li-ion |
| Battery life | ~70 hours at 20°C |
| Operating temperature | -10°C to 50°C |
| Weight | 2.3 kg with battery |
| Remote control | RC-250 wireless, 250m range |
Compatible Receivers & Targets
- Topcon LS-80L — Factory-matched, 360° detection, 800m range
- Topcon LS-100D — Machine control receiver, 100mm window
- Spectra HR550 — Digital grade readout, compatible with 635nm
Accessories & Part Numbers
- BT-65Q — Rechargeable battery pack
- BC-65 — Battery charger
- RC-250 — Wireless remote — required for dual-grade remote setup
- LS-80L — 360° receiver
- LS-100D — Machine control receiver
Error Codes Quick Reference
| E-01 | Tilt out of range — tripod not level |
| E-02 | Leveling motor fault — service required |
| E-03 | Temperature out of range |
| E-04 | Battery critically low |
| E-05 | Laser diode error — cool or service |
| E-08 | Leveling timeout — unstable tripod |
Frequently Asked Questions — Topcon RL-SV2S
What is the grade range of the Topcon RL-SV2S?
The RL-SV2S sets grade from 0% to ±10% in both X and Y axes simultaneously. This covers virtually all site grading and drainage work.
What is the difference between the Topcon RL-H5A and RL-SV2S?
The RL-H5A is a single-grade horizontal plane laser only. The RL-SV2S adds dual-grade capability — it sets independent slopes in both X and Y directions simultaneously. If you do drainage pad work, parking lots, or any cross-slope grading, you need the RL-SV2S.
How do I set grade on the Topcon RL-SV2S?
Use the GRADE buttons on the unit or the RC-250 wireless remote. Press the X-Grade button, set the slope percentage with the arrows, confirm. Repeat for Y-Grade. The unit holds both grades independently while rotating.
Does the RL-SV2S work with the same receivers as the RL-H5A?
Yes — both use the same 635nm red laser wavelength and are compatible with the same receivers (LS-80L, LS-100D, Spectra HR series).
What is the battery life of the Topcon RL-SV2S?
Approximately 70 hours at 20°C with the BT-65Q battery — slightly less than the RL-H5A due to the more complex grade control electronics.
Log RL-SV2S grade settings, calibration records, and as-built verification shots with Gradelog. Free to start at gradelog.com.
