Emlid Reach RS3



The Emlid Reach RS3 is a multi-band RTK GNSS receiver that features IMU-based tilt compensation(1), an LTE Modem and dual-band radio for RTK corrections.

It offers centimetre-level accuracy even in hard-to-reach spots, compatibility with RTK base stations transmitting TRIMTALK(2) 450S, has a battery life of up to 22 hours and is engineered to be tough. The Emlid Flow mobile app enables you to control the RS3 receivers with iOS and Android devices.

Comes with a complimentary 3-month Survey plan subscription in Emlid Flow.


6DOF, RTK + 2 mm + 0.3 mm/°


GPS/QZSS, GLONASS L1, L2; BeiDou B1, B2; Galileo E1, E5

18 hrs with tilt compensation

Li-Ion battery, USB Type-C charging

LTE and Wi-Fi

To connect the device to the internet

Dual-band radio

868/915 MHz LoRa to receive and transmit corrections
450 MHz UHF to receive corrections


Supported protocols to send and receive corrections

(1) Tilt compensation requires the Emlid Flow app
(2) TRIMTALK is a trademark of Trimble Inc.

Package Contents

– Reach RS3
– Carrying case with a strap
– LoRa antenna
– USB Type-C cable
– Free Emlid Flow 3-Month Survey Plan Subscription


Emlid Survey Pole with Smartphone Mount

The Emlid Survey Pole is a telescopic aluminium survey pole that is designed for comfortable surveying. The three-section construction delivers reliable stability with the help of solid flip locks. It comes equipped with a smartphone mount that fits most control devices.

Compatible with:
- Emlid Reach RS3
- Emlid Reach RS2+/RS2
- Emlid Reach RS+/RS
- Emlid Reach RX
- Any survey equipment with a standard female 5/8" thread


Folded length: 0.74m
Full length: 1.8m
Top tube diameter: 35mm
Lower tube diameter: 27mm
Total weight: 900g
Thread: 5/8"

Package Contents

– Emlid Survey Pole with Smartphone Mount
– Carrying bag

Emlid UHF 410-470 MHz Antenna

Emlid Reach RS3 UHF antenna for receiving corrections over 410–470 MHz UHF radios.

Compatible with:
- Emlid Reach RS3


- 1 x Emlid UHF 410-470 MHz Antenna
- Antenna carry case

Emlid Flow 1-Year Survey Plan Subscription

The Emlid Flow Survey Plan Subscription unlocks advanced survey functions on both the Emlid Flow app and the Emlid Flow 360 cloud-based interface.

See added benefits below:

Emlid Flow

- Collect and stakeout lines
- Add survey codes on the go
- Use WMS/WMTS layers
- Satellite map
- Localization

Emlid Flow 360

- Upload code libraries
- Satellite map
- Use WMS/WMTS layers

Up to three Emlid Flow 1-Year Survey Plan Subscription licenses can be active simultaneously on your Emlid Flow account, ensuring you have long term access to the benefits of the Survey Plan.

MicroSurvey FieldGenius for Android


MicroSurvey brings decades of innovation and expertise in survey field software creation to its next generation FieldGenius application.

FieldGenius for Android works with many GNSS receivers and on a multitude of Android devices.


- Supports the Emlid Reach RS3 tilt compensation feature
- Optimised for mobile and tablet devices
- Total station and GNSS support
- Intuitive and easy to learn
- Map driven interface
- RTK survey and stakeout functions


MicroSurvey FieldGenius for Android licenses are activated and sent to you in up to two business days from the payment date.

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Emlid Reach RS3

Accurate results even with large tilt angles

The IMU-based tilt compensation(1) in the Reach RS3 enables you to make measurements with up to 60 degrees of tilt while still staying within 20 mm of accuracy. The Reach RS3 continuously measures and corrects tilt in real-time to keep you on target.


Emlid calibrates each unit individually at the factory, so you can get your Reach RS3 up and running right out of the box.

Immune to magnetic disturbances

Unaffected by magnetic fields, the RS3 provides robust tilt compensation(1) even when working close to metal structures.

Quick initialization

Tilt initialization takes about 20 meters of walking or 10-20 seconds of tilting. Usually ready on the way from the car.

(1) Tilt compensation requires the Emlid Flow app

Gets a fix in seconds

The Reach RS3 gets a centimetre-accurate solution in about 5 seconds. It maintains robust performance even when the sky view is partially obstructed, or the receiver itself is tilted.

GPS/QZSS, GLONASS, BeiDou, and Galileo

L1C/A, L2C, L1OF, L2OF, B1I, B2I, E1B/C, E5b

RINEX logging and PPP support

Record raw data in the RINEX format for post-processing. You can use free PPK software, Emlid Studio, or any other software that supports RINEX. Logs are also compatible with OPUS, AUSPOS, and PPP services, so you can get highly accurate results anywhere in the world.

16 GB storage

160+ days of logging at 1 Hz

Up to 22 hours on 1 charge

The Reach RS3 comes equipped with a built-in, industrial-grade battery that can endure up to 22 hours of logging or 18 hours of working with tilt in RTK.

For uninterrupted multi-day operation, simply connect a power bank, just like you would with your mobile phone.

Charging via USB-C

Built-in LTE modem

The power-efficient LTE modem with global coverage means corrections can be accessed or broadcast over NTRIP independently, without relying on an internet connection from your phone.

Emlid Reach RS3

Get corrections from CORS, another Reach unit, or a 3rd-party base station


Work in RTK with VRS or a single baseline CORS network. You can also connect another GNSS receiver as an NTRIP base using Emlid NTRIP Caster.


Any receiver with RTCM3 support

LoRa 868/915 MHz

Perfect for areas with no internet coverage for NTRIP. LoRa is used when connecting Emlid receivers over the radio.


All Emlid receivers with built-in radios

UHF 450 MHz

An option to mix and match RTK receivers within your fleet. You can configure your Reach RS3 to receive corrections from an existing base.

You can also use a high-power external radio on your Reach base and connect with the UHF radio receiver in the Reach RS3.


Bases with radios that transmit TRIMTALK 450S (trademark of Trimble Inc.)

Comes with software for the field and the office

Emlid Flow

Emlid Flow

Emlid Flow efficiently manages all field-related tasks, including receiver configuration, RINEX logging, data collection, and stakeout.

For iOS and Android. The basic features are available for free to all users. Upgrade your Emlid Flow to the Survey Plan for advanced surveying features.

Emlid Flow Free
  • Collect and stakeout points
  • Coordinate systems, geoids, and grid shifts
  • Base shift
  • Export and import in CSV, DXF, and SHP
  • Built-in NTRIP client
  • Full control of Reach receivers
Emlid Flow Survey
  • All benefits of the free version
  • Collect and stakeout lines
  • Add survey codes on the go
  • Use WMS/WMTS layers
  • Satellite map
  • Localization
Emlid Flow 360

Emlid Flow 360

You can access your survey data via the cloud-based Emlid Flow 360, which allows you to prepare, manage, and export your projects from a browser.

The basic features are available for free to all users. Upgrade your Emlid Flow 360 to the Survey Plan for advanced surveying features.

Emlid Flow 360 Free
  • Project management and auto sync
  • Export and import of survey data
Emlid Flow 360 Survey
  • All benefits of the free version
  • Upload code libraries
  • Satellite map
  • Use WMS/WMTS layers
Emlid Studio

Emlid Studio

Free post-processing software for macOS and Windows. Learn more about Emlid Studio.

  • Kinematic processing
  • Static processing
  • RTK Drone data processing
  • Raw data analysis
  • Stop & Go with Emlid Flow
Emlid Caster

Emlid Caster

Connect up to 10 rovers to your base station via the internet or set up your own NTRIP network with Emlid Caster. Learn more about Emlid Caster.

  • Available for free and works worldwide
  • Works with Reach and other receivers with NTRIP support
  • RTCM3 and other correction formats support
  • Up to 5 bases and 10 rovers at the same time

Rugged and compact


IP67 rated, the RS3 is waterproof up to a one-metre depth. All RS3 connectors are completely sealed and protected from water and dust with silicone plugs.

Industrial battery

The Reach RS3 Li-Ion battery handles high and low temperatures well and over 2000 cycles of charging and discharging while maintaining its original capacity.

While others are hot-swapping batteries, your Reach just keeps working.


The RS3 has been extensively tested in conditions that simulate the coldest winters and hottest summers to ensure the receiver is ready to work wherever you go.


The body of the Reach RS3 is made of polycarbonate and coated with elastomer. The combination of these materials makes your Reach RS3 drop resistant and ready for the harshest conditions.




Emlid Reach RS3 Datasheet


User Documentation

Emlid Reach RS3


Discussion Forum

Emlid User Community