Emlid Reach RS4 Pro RTK GNSS Receiver for Faster, Safer Surveying
The Emlid Reach RS4 Pro is a next-generation RTK GNSS receiver and survey-grade GPS system built for professionals who need speed, accuracy, and reliability on real-world sites.
As an authorised UK Emlid dealer since 2018, Innovelec supplies the RS4 Pro with expert support, fast UK delivery, and practical guidance to help you get the most from your equipment.
On many sites, getting a pole exactly where it needs to be is easier said than done. You might be working across a busy road, behind a fence, or near an area that simply isn’t safe to access. What should be a simple measurement can quickly become slow, awkward, and frustrating.
The RS4 Pro is built to remove that problem.
With all-band GNSS, dual cameras, and visual stakeout, it allows you to capture accurate data without needing to physically stand on every point. The result is a GNSS receiver for professionals that helps you work faster, stay safer, and get the job done with confidence.
✅ Centimetre-level RTK accuracy
✅ Visual stakeout with augmented reality guidance
✅ Measure inaccessible points safely from a distance
✅ Built for construction, utilities, rail, and land surveying
What Makes the RS4 Pro Different
Most RTK GNSS receivers rely entirely on coordinates. That means you are constantly translating numbers into positions on site.
In straightforward environments, that works. But on real projects, it often slows you down.
You might spend time repositioning, double-checking, or trying to access a point that simply is not practical to reach.
The RS4 Pro changes that.
By combining survey-grade GNSS positioning with visual feedback, it allows you to see where points are in the real world, not just on a screen.
This means you can:
- Stake out points with confidence, even in complex layouts
- See exactly where to place points without second-guessing
- Capture measurements across obstacles without stopping work
For teams using GNSS for land surveying, construction, and infrastructure, this removes friction from everyday tasks and makes workflows more predictable.
Key Features
- All-Band RTK GNSS Receiver
A high-accuracy GNSS receiver for surveying that maintains reliable positioning across all major constellations - Dual Cameras
Capture measurements visually when direct access is not possible - Visual Stakeout Workflow
Reduce interpretation and work directly with what you see on site - Remote Point Capture
Measure across roads, barriers, and obstacles without disrupting the job - Fast Initialisation and High Accuracy
Spend less time waiting and more time working - Rugged Design
A survey-grade GNSS receiver built to handle daily site conditions - Seamless Integration
Fits into existing workflows with Emlid Flow and standard survey tools
Use Cases for the RS4 Pro
Construction and Site Setout
On busy construction sites, time pressure is constant and mistakes are costly.
Instead of working from coordinates and hoping alignment is correct, the RS4 Pro lets you see exactly where points belong. This reduces rework and gives teams more confidence when setting out complex designs.
Utilities and Infrastructure
Utility work often involves confined spaces, restricted access, and active worksites.
With a traditional RTK GPS system, even simple measurements can require workarounds. The RS4 Pro allows you to capture those same points safely from a distance, keeping work moving without unnecessary delays.
Rail and Highways
When working near traffic or live rail, safety is always the priority.
The RS4 Pro helps reduce exposure by limiting the need to physically reach difficult points. This makes it a valuable GNSS receiver for professionals working in high-risk environments.
Land Surveying
Surveyors frequently deal with uneven ground, obstacles, and partial visibility.
The RS4 Pro provides consistent survey-grade GNSS accuracy, while making it easier to handle areas that would normally slow down a survey.
Visual Stakeout and AR Workflows
Traditional surveying requires interpreting coordinates and translating them into positions on site.
That process takes time, and on complex jobs, it often introduces uncertainty.
The RS4 Pro removes this step.
By overlaying project data directly onto the real world, it makes stakeout clearer and more intuitive. You spend less time interpreting and more time executing.
It also enables image-based measurement, allowing you to capture accurate points without physically accessing them. This is especially valuable on sites where access is restricted, unsafe, or simply impractical.
From Reach RS3 to RS4 Pro: What Has Changed?
The Reach RS4 Pro represents a significant step forward from the RS3.
It combines all-band RTK GNSS performance with visual capabilities, adding:
- Dual integrated cameras
- Visual stakeout and AR guidance
- Remote point capture
- Faster convergence and improved reliability
These improvements make workflows quicker, safer, and easier to execute in real-world conditions.
Emlid Reach RS4 Pro vs Reach RS4
Both the RS4 Pro and Reach RS4 are professional survey-grade GNSS receivers, but they are designed for different types of workflows.
Quick Comparison
| Feature | Reach RS4 Pro | Reach RS4 |
|---|---|---|
| GNSS | All-band RTK | All-band RTK |
| Cameras | Yes, dual cameras | No |
| Visual stakeout | Yes | No |
| Remote point capture | Yes | No |
| Best for | Complex sites and advanced workflows | Standard surveying |
Reach RS4 Pro: Built for Complex Sites
The RS4 Pro is designed for users working in environments where access is limited or visibility is poor.
It allows you to:
- Stake out points when pole positioning is difficult
- Measure safely in restricted or hazardous areas
- Work efficiently around buildings, roads, and obstacles
✅ Choose RS4 Pro if you need:
- Visual stakeout and AR workflows
- Remote measurement capability
- Maximum flexibility on demanding projects
Reach RS4: Traditional GNSS Workflows
The Reach RS4 offers the same RTK performance without visual features.
It is best suited for:
- Open-site surveying
- Standard base and rover setups
- Mapping and general data collection
✅ Choose RS4 if you want:
- Reliable RTK accuracy
- Simpler workflows
- A cost-effective solution
Which Emlid Receiver Is Right for You?
Choose the RS4 Pro if your projects involve complex environments, restricted access, or benefit from visual workflows.
Choose the RS4 if your work is primarily in open environments and does not require camera-based functionality.
If you are unsure, Innovelec can help you select the right solution.
Why Buy from Innovelec?
Innovelec is an authorised UK Emlid dealer supporting surveying and geospatial professionals since 2018.
We supply genuine equipment with manufacturer-backed warranty and provide guidance based on real surveying experience.
- UK-based stock for fast delivery
- Direct relationship with Emlid
- Support from experienced professionals
- Trusted across construction, utilities, and geospatial sectors
Buying from an authorised UK supplier ensures correct setup, full warranty coverage, and access to ongoing support.
FAQs
Is the Emlid Reach RS4 Pro compatible with UK NTRIP networks?
Yes. The RS4 Pro works with UK NTRIP correction services such as RTKFnet or PointPerfect, subject to valid access and mobile coverage.
Does the Reach RS4 Pro work with Emlid Flow?
Yes. It integrates with Emlid Flow for survey, stakeout, and data collection workflows.
What accuracy can I expect?
With RTK corrections, the RS4 Pro delivers centimetre-level accuracy depending on environment and signal conditions.
Is this supplied with UK warranty and support?
Yes. It includes manufacturer warranty and support, with additional assistance available from Innovelec as an authorised UK dealer.
