Emlid Reach RS4 Pro

Name: Emlid Reach RS4 Pro
Brand: Emlid
Price: 4599.0 USD
Availability: InStock

by Emlid

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Emlid Reach RS4 Pro | Professional GNSS Receiver with AR Guidance

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Reach RS4 Pro All-Band GNSS Receiver

Professional-grade GNSS receiver with dual cameras and AR guidance

Reach RS4 Pro Professional GNSS Receiver

Overview

The Reach RS4 Pro is a professional-grade GNSS receiver designed for high-precision surveying and mapping applications. With multi-band support, tilt compensation, dual cameras for AR guidance, and robust connectivity options, it delivers centimeter-level accuracy in the most challenging environments.

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.

Dynamic Navigation

Intuitive guidance to your target points

Auto Bullseye View

Automatically aligns with your target

Cut & Fill Indicator

Visual representation of elevation differences

Quick Point Switch

Seamlessly move between points

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.

Across water

Behind fences

Over traffic

Above pits

Past hedges

Around machinery

Unmatched Precision, Even Under Canopy

The Reach RS4 Pro delivers centimeter-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.

7mm + 1 ppm

RTK Precision

672

Channels

6

GNSS Systems

<5s

Fix Time

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. Initialization takes just a few quick movements and remains stable throughout the job—no manual recalibration needed.

Factory-Calibrated

Ready to use out of the box

Interference-Proof

Reliable in challenging environments

Rapid Initialization

Quick setup for immediate use

Unlimited Tilt Angles

Works at any angle

Engineered for the Harshest Environments

Magnesium Alloy Body

Crafted from the same material used in aerospace and high-end tech, offering exceptional strength without extra weight.

16 Hours on One Charge

No need to stop mid-job. Power up via USB-C or plug in a power bank on the go.

Waterproof IP68

Completely sealed against water and debris, ready for rainstorms and dusty sites.

-40 to +65 ºС Range

Performs without compromise in extreme temperatures from cold to heat.

Software to Drive Your Entire Workflow

The Reach RS4 Pro is powered by Emlid Flow—a complete field and cloud solution for iOS and Android. From initial setup to final verification, Emlid Flow keeps your entire team connected, your data synchronized, and your project on track.

Keep Your Team in Sync

Invite team members, assign roles, and share projects
Monitor field progress from the office and sync data instantly with the field
Unified workflows for all team members, consistent interface, no extra training needed

Handle All Types of Fieldwork

Topographic surveys: capture precise elevation and terrain data
Stakeout & layout: mark points, lines, and site boundaries
Line & road work: stake centerlines, offsets, and curves with precision
Cut & fill calculations: measure stockpiles and earthworks on-site
As-builts: confirm construction accuracy against design plans

Key Advantages

All-band GNSS

Supports all major GNSS constellations including GPS, GLONASS, Galileo, BeiDou, QZSS, and NavIC with 672 channels.

Fast Convergence

Rapid initialization with convergence time of less than 5 seconds typically, ensuring minimal downtime.

Long Range Radio

Integrated LoRa radio with up to 8 km range and UHF radio options for extended coverage in remote areas.

Multiple Connectivity

Built-in LTE modem, Wi-Fi, and Bluetooth 5.1 for flexible communication options in any environment.

Rugged & Durable

IP68 rated for dust and water resistance, operating in temperatures from -40°C to +65°C.

Extended Operation

Up to 16 hours as RTK rover with tilt compensation or 22 hours of data logging on a single charge.

What's in the Box

The Reach RS4 Pro comes complete with everything you need to start surveying right out of the box:

Reach RS4 Pro GNSS Receiver

Carrying Bag

5000 mAh Li-Ion Battery

USB Type-C Charging Cable

Documentation & Quick Start Guide

Mounting Bracket

Specifications

Positioning

Precision Static	H: 4 mm + 0.5 ppm V: 8 mm + 1 ppm
Precision PPK	H: 5 mm + 0.5 ppm V: 10 mm + 1 ppm
Precision RTK	H: 7 mm + 1 ppm V: 14 mm + 1 ppm
Tilt Compensation	RTK + 2 mm + 0.3 mm/°
Convergence Time	<5 s typically
Number of Channels	672
Update Rates	Up to 10 Hz

Connectivity

Emlid Radio	Included
LoRa Radio	868/915 MHz, 0.1W, Up to 8 km
UHF Radio	410-470 MHz, TRIMTALK 450S
LTE Modem	Global bands, Nano-SIM
Wi-Fi	802.11a/b/g/n
Bluetooth	Bluetooth 5.1 (BR/EDR + LE)
Ports	RS-232, USB Type-C

Mechanical

Dimensions	128.6 × 128.6 × 99.3 mm
Weight	920 g
Operating Temperatures	-40 to +65 °C
Ingress Protection	IP68

Electrical

Autonomy	16 hrs as RTK rover with tilt 22 hrs of logging
Battery	Li-Ion 5000 mAh, 7.2 V, 36 Wh
Charging	USB Type-C (PD): 5V/3A, 9V/3A, 12V/3A, 15V/3A
Internal Storage	16 GB

Signal Tracked

GPS	L1C/A, L2C, L5
GLONASS	L1OF, L2OF
Galileo	E1B/C, E5a, E6
BeiDou	B1I, B1C, B2a, B3I
QZSS	L1C/A, L1C/B11, L2C, L5
NavIC	L1SPS Data, L5SPS

Data Protocols

Corrections	NTRIP, RTCM3
Position Output	NMEA, LLH/XYZ
Data Logging	RINEX, NMEA, LLH/XYZ, UBX

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Free Shipping

On all orders (lower 48 states).

30 Days Return Policy

We accept returns within 30 days of delivery, provided the product is not used and in its original condition.