Description
Discover the new way to survey with dual cameras
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. Save time setting up a total station and avoid hazardous areas.
Unmatched precision, even under canopies and in canyons
The Reach RS4 Pro delivers centimetre-level accuracy, even in challenging environments like forests or urban canyons. With support for every GNSS constellation and signal frequency, including the L5 and L6 bands, resistant to multipath and interference, the Reach RS4 Pro locks onto 40+ satellites simultaneously using 672 channels.
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. Initialisation takes just a few 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.
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
- Magnesium alloy body
- 16 hours on one charge
- Waterproof, IP68 rating
- -40 to +65 ºС operating range
Survey with Emlid Flow app
Reach RS4 Pro comes with our easy-to-use mobile app Emlid Flow, for iOS and Android, used to control all the features of the RS4 Pro. Create projects, collect and stakeout points, import and export geodata in industry standard formats such as CSV, DXF, and ESRI Shapefile.

