Emlid Reach RS4 Pro

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

Reach RS4 Pro. Discover the new way to survey with dual cameras

With two Full HD cameras, the RS4 Pro takes 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

High-accuracy, even under canopy

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
• L1/L2/L5/L6https://web-emlid.s3.eu-central-1.amazonaws.com/rs4/Next-gen-tilt.webm
• Fix in less than 5 seconds
• GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC

Next-gen tilt compensation

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
• Immune to interference
• Faster initialization
• No angle limit

Quick release mount

This mount is specifically designed for tilt compensation, eliminating backlash and securing the receiver firmly to the survey pole. Even a small amount of wobble between the device and the pole can compromise the accuracy when tilting. The quick-release system provides a fast and reliable connection for maximum precision.

Base and rover

NTRIP

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

Dual-band radio
UHF 450 MHz

• Transmit and receive
• Up to 2W ( may require a license2 )
• Compatible with Reach and 3rd-party receivers with TRIMTALK 450S support3
  

LoRa 915 MHz

• Transmit and receive
• Up to 1W ( license-free in North America2 )
• Compatible with Reach receivers

Built to perform in extreme conditions

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.