Reach RS4 Pro GNSS Receiver

High-Precision, Camera-Enhanced GNSS for Surveying, Mapping & Construction

Reach RS4 Pro GNSS Receiver

High-Precision, Camera-Enhanced GNSS for Surveying, Mapping & Construction

The Emlid Reach RS4 Pro combines all-band RTK GNSS performance with dual cameras and advanced tilt compensation—giving field teams faster, safer, and more accurate ways to capture position data. Built for modern surveying and construction workflows, the RS4 Pro enables AR stakeout, remote point capture, and measurement-from-image capabilities that reduce time in the field and improve ROI on every project.

GNSS performance depends heavily on workflow fit, accuracy requirements, and site conditions. Buyers evaluate how well a receiver will perform in dense urban corridors, near tree cover, and on active construction sites. The RS4 Pro's all-band tracking, fast RTK fixes, and camera-supported measurements make it a strong choice for organizations needing reliable positioning in challenging environments.

At NOAR Technologies, we help organizations integrate new GNSS hardware into real-world workflows. From selecting the right configuration to training your crews and connecting your data to the rest of your ecosystem, we ensure the RS4 Pro delivers measurable value from day one.

Why Choose the Reach RS4 Pro?

All-Band RTK GNSS with Centimeter Accuracy

The RS4 Pro supports multi-frequency signals across all major constellations—GPS, GLONASS, Galileo, BeiDou, and QZSS—providing fast, resilient RTK fixes even in GNSS-limited environments. This addresses top considerations around accuracy, reliability under canopy or near structures, and overall RTK performance.

Dual Cameras for Visual Stakeout & Remote Point Capture

The built-in front and bottom-facing cameras enable new GNSS + vision workflows:

AR stakeout using camera overlays
Photo-based measurements from multiple angles
Safe remote collection of points near traffic, utilities, or hazardous areas
High-accuracy photogrammetric correction when GNSS signal is limited

These camera-driven capabilities increase field safety, improve measurement confidence, and enable efficient work in obstruction-heavy sites.

Tilt Compensation for Faster Fieldwork

Survey and stakeout without leveling the pole. Emlid's calibration-free tilt engine lets crews record accurate points—even on slopes, uneven surfaces, tight spaces, or rebar-heavy job sites. This directly aligns with real-world needs for speed, usability, and reduced operator errors in actual job conditions.

Flexible Connectivity: Base or Rover

Use RS4 Pro as a rover, base, or part of a hybrid network:

LoRa
UHF
NTRIP
LTE/Internet-based corrections

This flexibility helps you match the RS4 Pro to your preferred correction workflow—CORS networks, site bases, multiple rover fleets, or remote projects where radio performance matters.

Built for the Field