
Emlid RS4 Pro/ RS4 Base Rover Combo Kit (pre-order shipping in December)
Kit includes 1x RS4 Pro and 1x RS4.
ALL PREORDERS INCLUDE A FREE QUICK DISCONNECT & PROTECTIVE BUMPER for each unit.
All-band RTK GNSS receiver. Ultimate precision, even in the most challenging conditions.
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.
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Dynamic navigation
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Auto bullseye View
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Cut & fill indicator
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Quick point switch
Crews can work faster with AR guidance, even on complex construction sites and roadworks.
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.
High-accuracy, even under canopy
The Reach RS4 can track all available satellite constellations and frequencies, including the lower L5 and L6 bands, which are more resistant to multipath and interference. With 672 channels, it can track 40+ satellites at a time. These features ensure reliable performance and centimeter-level precision
Next-gen tilt compensation
The Reach RS4 delivers accurate results even at high tilt angles — for example, a 30° tilt still achieves 18 mm precision.1 The compensation mechanism activates with just a few moves and remains stable throughout the survey, saving time and avoiding the need for recalibration.
Quick release mount
This mount is specifically designed for tilt compensation, eliminating backlash and securing the receiver firmly to the survey pole. Even a small amount of wobble between the device and the pole can compromise the accuracy when tilting. The quick-release system provides a fast and reliable connection for maximum precision.
Base and rover
NTRIP
Dual-band radio
UHF 450 MHz
Up to 2W ( may require a license2 )
Compatible with Reach and 3rd-party receivers with TRIMTALK 450S support3
LoRa 915 MHz
Transmit and receiveBuilt to perform in extreme conditions
Magnesium alloy body
16 hours on one charge
Waterproof
-40 to +149 ºF