The Reach RS4 can track all available satellite constellations and frequencies, including the lower L5 and L6 bands, which are more resistant to multipath and interference. With 672 channels, it can track 40+ satellites at a time. These features ensure reliable performance and centimeter-level precision

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

The Reach RS4 delivers accurate results even at high tilt angles, for example, a 30° tilt still achieves 18 mm precision.1 The compensation mechanism activates with just a few moves and remains stable throughout the survey, saving time and avoiding the need for recalibration.

• Factory-calibrated
• Faster initialization

• Immune to interference
• No angle limit

Work in RTK with VRS or a single baseline CORS network in RTCM3 format. You can also connect another GNSS receiver as an NTRIP base using Emlid NTRIP Caster

Magnesium alloy body

The RS4’s magnesium alloy body is as strong as it is lightweight. This material is often used for aerospace equipment and high-end electronics. It strikes the perfect balance of durability and lightness, making it ideal for use in tough conditions while remaining easy to handle.

16 hours on one charge

The RS4 offers an impressive battery life of up to 16 hours on a single charge. Use the USB-C for recharging or use a power bank for even greater flexibility. Designed to keep working as hard as you do, without interruption.

Waterproof

Thanks to its IP68 rating, the RS4 is fully dustproof and waterproof. Whether it's raining, snowing or a dusty construction site, the Reach RS4 will keep working.

-40 to +65 ºС

The Reach RS4 operates in temperatures from -40°C to +65°C. Its performance remains excellent in both freezing cold and scorching heat.

The Reach RS4 comes with Emlid Flow, a comprehensive mobile and cloud solution compatible with both iOS and Android. It keeps your team aligned and your projects on track while supporting various site tasks.

• Invite team members, share projects and manage access
• Monitor field progress from the office and exchange data instantly with real-time sync
• One workflow for the whole team, with data that is always up to date, a consistent interface, and no additional training required

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.