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Equipment / EMLID Reach RS4
New 2025

EMLID Reach RS4 GNSS/RTK Receiver

Survey-Grade Ground Control. Professional survey services powered by EMLID technology.

<20 seconds
Fix Time
5mm + 0.5ppm
Accuracy
24+ hours
Battery

About the EMLID Reach RS4

The EMLID Reach RS4 provides the ground control accuracy that makes drone deliverables survey-grade. <20 second fix time, 5mm + 0.5ppm accuracy, and 24+ hour battery. Your engineer can rely on our data.

Key Benefits

  • Fast <20 second fix time
  • 5mm survey-grade accuracy
  • 24+ hour battery life
  • 5G ready for future
  • Multi-constellation support

Technical Specifications

Fix Time <20 seconds
Accuracy 5mm + 0.5ppm
Battery 24+ hours
Ready 5G ready
Constellations Multi-GNSS

Ideal Applications

Ground control points
Survey control
Drone mission support
Construction staking
Boundary surveys

Services Using EMLID Reach RS4

EMLID Reach RS4 Service Areas

Professional EMLID Reach RS4 surveying services available across 84 locations nationwide. 1-hour response time guaranteed.

EMLID Reach RS4 FAQ

Why do you need ground control for drone surveys?

Ground control points (GCPs) tie aerial data to real-world coordinates with survey-grade accuracy. Without GCPs, drone data accuracy is limited by GPS alone (~1-2m). With GCPs, we achieve 1-2cm accuracy.

Learn More

Expand your knowledge about surveying technology.

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