Emlid Reach RS4
IP68 multi-band RTK GNSS built for reliable, efficient fieldwork. Reach RS4 delivers centimetre-level accuracy with fast tilt compensation and rock-solid connectivity, so crews can move faster on real sites.
Key features
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All-band, all-constellation: Tracks L1/L2/L5/L6 across major GNSS systems for stable accuracy.
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Fast tilt compensation: Next-gen IMU with 5× quicker initialisation to keep you moving between shots.
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Rugged & ready: IP68 magnesium-alloy body stands up to dust, rain and mud.
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Flexible comms: LTE, Wi-Fi, Bluetooth, and multi-band radio for base/rover and network workflows.
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Smooth software workflow: Works seamlessly with Emlid Flow / Flow 360 on iOS & Android.
Upgrade path
Need vision tools? Upgrade to Reach RS4 Pro for AR stakeout and image-based measurement to capture hard-to-reach points even faster.
Emlid Flow Software
The EMLID Reach RS4 is fully compatible with Emlid Flow, the intuitive field data collection app available for iOS and Android. Emlid Flow allows you to collect, stake out, and manage survey data directly from your smartphone or tablet, with a clean interface designed for both professionals and first-time GNSS users. Simply connect your RX2 via Bluetooth and you're ready to start capturing accurate field data in minutes.
RTK Credits For centimetre-level accuracy without a base station, the RS4 supports Network RTK corrections via NTRIP. To get started with RTK positioning, visit our Network RTK Corrections
OR3D GEO support
We use Emlid hardware in our own service work and can help integrate RS4 into your workflows - from field setup and coordinate systems to data processing and export.
Order Reach RS4 today from OR3D GEO.