Reach RS4 Pro

Name: Reach RS4 Pro
SKU: 23003
Availability: InStock

$6,129.00 CAD

All-band RTK GNSS receiver with dual cameras and tilt compensation

Next-level stakeout with augmented reality and measuring from photos. Comes with a mobile app.

Two Full-HD cameras: AR guidance for stakeout
Measurements from images

High precision: RTK: 7 mm + 1 ppm
Tilt compensation: RTK: 2 mm + 0.3 mm/°

All-band support

GPS: L1C/A, L2C, L5
GLONASS: L1OF, L2OF
Galileo: E1-B/C, E5a, E6
BeiDou: B1I, B1C, B2a, B3I
QZSS: L1C/A, L1C/B11, L2C, L5
NavIC: L1-SPS Data, L5-SPS

Base and rover: 915 MHz LoRa 450 MHz UHF NTRIP

Rugged and powerful: 16 hours on one charge. Magnesium alloy body IP68 rating. Withstands temperatures from -40 to +65°C (-40 to +149ºF)

Package includes

– Reach RS4 Pro
– Carrying case
– USB Type-C cable
– LoRa Antenna 860-930 MHz
– UHF Antenna 410-470 MHz

Category: Emlid

Description

Description

All-band RTK GNSS receiver with dual cameras. Visual stakeout and remote point capture for faster and safer work.

Discover the new way to survey with dual Full HD cameras and take 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.

Dynamic navigation
Auto bullseye View
Cut & fill indicator
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.

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.

Accuracy: 7mm + 1 ppm in RTK
Constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC
Fix: Fix in under 5 seconds
Channels: 672 channels
Full-band support: L1 / L2 / L5 / L6

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
Rapid initialization
Immune to interferences
Unlimited tilt angles

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. Mount available here

Base and rover connectivity

NTRIP: 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

Dual-band radio

UHF 450 MHz

Transmit and receive

Up to 2W ( may require a license)

Compatible with Reach and 3rd-party receivers with TRIMTALK 450S support³

LoRa 915 MHz

Transmit and receive

Up to 1W (license-free in North America)

Compatible with Reach receivers

Engineered for the harshest environments

Magnesium alloy body

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.

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.

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.

-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.

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 surveys – stake centerlines and offsets with precision
Cut & fill calculations: measure stockpiles and earthworks on-site
As-builts: confirm construction accuracy against design plans

Dimensions: 128.6 x 128.6 x 99.3 mm
Weight: 920 g
Operating temperatures: -40 to +65 °C
Ingress protection: IP 68
Autonomy: 16 hrs as RTK rover with tilt
Battery: Li-Ion 5000 mAh, 7.2 V 36 Wh
Static Accuracy: H: 4 mm + 0.5 ppm / V: 8 mm + 1 ppm
PPK: H: 5 mm + 0.5 ppm / V: 10 mm + 1 ppm
RTK: H: 7 mm + 1 ppm / V: 14 mm + 1 ppm
Tilt compensation: RTK + 2 mm + 0.3 mm/°
Convergence time: ~5 s typically

Connectivity

LoRa radio up to 1W
- Frequency range: 868/915 MHz
- Distance: Up to 8km
UHF Radio up to 2W
- Frequency Range: 410–470 MHz
- Protocols: TRIMTALK 450S**
- Modulation Type: GMSK
LTE Modem:
- Region: Global
- Bands: FDD-LTE: 1, 2, 3, 4, 5,
  7, 8, 12, 13,
  18, 19, 20, 26, 28
  TD-LTE: 38, 39, 40, 41
  UMTS (UHPS/FDD):
  1, 2, 5, 8
  Quad-band, 850/1900
  900/1800 MHz
- Sim Card: Nano-SIM
Wi-Fi: 802.11a/b/g/n
Bluetooth: 5.1 (BR/EDR + LE)
Ports: RS-232, USB Type-C

Data

Corrections: NTRIP, RTCM3
Position output: NMEA, LLH/XYZ
Data logging: RINEX, NMEA, LLH/XYZ, UBX
Internal storage: 16 GB

GNSS

Signal tracked: PS: L1C/A, L2C, L5,
GLONASS: L1OF, L2OF,
Galileo: E1-B/C, E5a, E6,
BeiDou: B1I, B1C, B2a, B3I,
QZSS: L1C/A, L1C/B11, L2C, L5,
NavIC: L1-SPS Data, L5-SPS
Number of channels: 672
Update rates: up to 10 Hz

Imaging

Image sensors: 1/2.6 in, CMOS, global shutter, Full HD
Field of View:
- Front camera: H: 64.6°, V: 42.8°
- Bottom camera: H: 63°, V: 42°
Video Frame: 25 fps

Reach RS4 Pro

Reach RS4 Pro