Quick Answer
The Spectra Precision HV301 is a dual-grade rotary laser offering both horizontal plane and slope control — it projects horizontal, vertical, or sloped planes for interior and exterior applications where both grade and level reference are needed.
Spectra Precision HV301 — Complete Specs & Guide
Category: Rotary Laser | Brand: Spectra Precision
The Spectra Precision HV301 is a dual-grade rotary laser offering both horizontal plane and slope control — it projects horizontal, vertical, or sloped planes for interior and exterior applications where both grade and level reference are needed.
Full Specifications
| Accuracy | ±1/16" per 100' (horizontal), ±1/8" (vertical/slope) |
| Grade range | ±8% automatic, manual beyond |
| Self-leveling range | ±5 degrees |
| Working range | 300m diameter |
| Laser | Class 3R / 635nm red |
| IP rating | IP55 |
| Battery | 8 × AA alkaline |
| Battery life | ~90 hours |
| Weight | 2.1 kg |
Accessories
- HR320 — Standard 635nm receiver
- HR550 — Digital grade receiver
- RC 350 — Wireless remote
Common Error Codes
| Er1 | Leveling out of range — level tripod |
| Er2 | Motor fault — service required |
| Er3 | Battery low — replace 8 AA batteries |
| Er5 | Remote signal lost — check RC unit |
Why Buy From Express Tools
Express Tools is an authorized dealer for all major contractor equipment brands. Every unit ships with full manufacturer warranty, factory calibration, and genuine accessories. Our pricing is guaranteed authorized dealer pricing on in-stock items, with same-day shipping before 2PM Eastern.
Frequently Asked Questions
What is the HV301 grade range?
±8% automatic dual-grade control. Manual mode beyond ±8% is available for extreme slope work.
What is the difference between HV301 and LL500?
The LL500 is single-grade (horizontal plane only). The HV301 adds dual-grade and vertical plane capability — it can project horizontal, vertical, or sloped planes.
What receiver works with the HV301?
Standard HR320 or HR550 receivers work — both are 635nm compatible. The HR550's digital grade readout is useful for grade-critical HV301 applications.
Service and Support from Express Tools
Express Tools is an authorized dealer for this equipment brand — every unit ships with full manufacturer warranty and factory calibration certificate. Our team can assist with setup questions, compatibility verification, and warranty service coordination. Our pricing is guaranteed authorized dealer pricing on all in-stock items, with same-day shipping on orders placed before 2PM Eastern.
Professional field equipment requires periodic service to maintain accuracy. Express Tools coordinates factory service for all brands we carry — contact us when your equipment needs calibration verification or warranty repair, and we'll connect you with the fastest route to an authorized service center.
Track your Spectra Precision HV301 in Gradelog's Equipment Registry — calibration dates, service history, job assignments. Free to start.
