Key Features:
Reach RS4 Pro. Discover the new way to survey with dual cameras
With two Full HD cameras, the RS4 Pro takes surveying and stakeout further than traditional RTK can.
Stake out faster with AR guidance
With the RS4 Pro, stakeout becomes visual. Rather than simply following coordinates on a map, your designs are directly overlaid on the real world, clearly showing where to place stakes.
Measure from images
Even if you can't put the pole there, you can still measure it with your RS4 Pro. Use the cameras to measure building facades, areas behind fences, across busy roads and any other inaccessible points.
Unmatched precision, even under canopy
The advanced tilt compensation stays accurate even at steep angles. For example, at a 30° tilt, the Reach RS4 Pro still delivers 18 mm precision.1 Initialization takes just a few quick movements and remains stable throughout the job—no manual recalibration needed.
Quick release mount
The custom-designed quick release mount ensures the receiver is locked firmly to your survey pole, eliminating backlash. Even the smallest wobble can affect tilt-based measurements at steeper angles. This mount solves the issue with a fast and rock-solid connection for reliable data accuracy.
Next-gen tilt compensation
The advanced tilt compensation stays accurate even at steep angles. For example, at a 30° tilt, the Reach RS4 Pro still delivers 18 mm precision.1 Initialization takes just a few quick movements and remains stable throughout the job—no manual recalibration needed.
Base and rover connectivity
Connect to VRS or single-base CORS networks using RTCM3 format for precise RTK corrections. You can also transmit corrections from your own base using Emlid NTRIP Caster.
Engineered for the harshest environments
Crafted from the same material used in aerospace and high-end tech, the Reach RS4 Pro magnesium body offers exceptional strength without the extra weight. It’s rugged enough for demanding job sites—and light enough for all-day use.
16 hours on one charge
No need to stop mid-job to recharge. The Reach RS4 Pro runs up to 16 hours on a single charge. Power up via USB-C or plug in a power bank on the go—maximum uptime, minimum hassle.
Waterproof
From rainstorms to dusty construction sites, the Reach RS4 Pro is fully ready. With an IP68 rating, it’s completely sealed against water and debris.
-40 to +65 ºС
From cold to heat, the Reach RS4 Pro performs without compromise. Engineered to operate flawlessly between -40°C and +65°C, it’s ready for work anywhere.
Emlid Reach RS4 Pro
The Reach RS4 Pro is Emlid’s flagship multi-constellation, all-band RTK GNSS receiver, engineered for high-precision survey, stakeout and mapping workflows. What sets it apart is the integrated dual Full-HD cameras, enabling visual stake-out and remote measurement of inaccessible points, combined with robust GNSS performance, factory-calibrated IMU tilt-compensation, and a rugged field-ready body.
Why It’s a Game-Changer
The RS4 Pro offers more than “just” centimetre-level GNSS accuracy — it transforms how field teams work. With AR-enabled stake-out and remote point capture from dual cameras, you can mark or measure features that would otherwise require complex setups or total stations. The full-band 672-channel receiver ensures robust performance even in challenging signal environments (city, canopy, multipath). Combined with rugged build and workflow integration, it’s designed for professionals who demand accuracy, speed, and flexibility on site.
