This flexible set allows you to implement a powerful RTK GNSS solution. The Reach RS4 serves as a stationary base, while the Reach RS4 Pro with integrated dual camera is used as a rover. When combined, both systems enable high-precision positioning and convenient stakeout – ideal for surveying tasks, mapping, and demanding field applications.
With the new Reach RS4 from Emlid, GNSS measurement is a breeze! The RTK GNSS receiver enables measurements with an accuracy of less than 20 mm at an inclination of up to 60 degrees. The receiver is calibration-free and ready to use right out of the box.
The Emlid Reach RS4 delivers centimetre-accurate results in approximately 5 seconds and maintains its performance even when the sky is partially obscured or when the device is tilted. The receiver is also immune to magnetic interference, so metal objects and electronics do not affect its accuracy.
A special highlight: the new magnesium housing not only makes the RS4 extremely robust, but also enables better signal processing in the event of reflections, for example when the receiver is located near a wall.
With the Reach RS4, performance is guaranteed! The industrial-grade battery lasts up to 22 hours when recording or 16 hours when used as an RTK rover with tilt compensation. For uninterrupted operation over several days, simply connect a power bank via USB-C.
The GNSS receiver with integrated LTE modem is easy to use and can be easily mounted on a GPS pole. It is also shock-resistant, dustproof and waterproof to IP68 and can be used at temperatures ranging from -40°C to 65°C.
In addition to all the features of the RS4, the Pro model has two integrated cameras that take your field work to a whole new level. With the connection to the Emlid Flow app, stakeout points can not only be displayed via coordinates, but also tracked visually using augmented reality – a decisive advantage in complex projects. In addition, measurement points can be determined directly from photos, even if direct access to the location is not possible. This combination of state-of-the-art GNSS technology and image data integration makes the RS4 Pro a unique tool that expands classic surveying with innovative visualization.
Product characteristics
- Tilt compensation: RTK + 2mm + 0.3mm/°
- Average convergence time: ~5s
- Reaches various positioning providers (with update rates up to 10 Hz):◦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
- Insensitive to magnetic interference
- Fixed solution in seconds
- Post-processing using RINEX raw files (PPK)
- Precise position data with signal error correction (RTK)
- Precise Point Positioning (PPP) – Precise measurements anywhere in the world
- Global LTE modem (for use with nano SIM)
- Battery life up to 22 hours of recording, 18 hours as RTK rover with tilt correction
- Lithium-ion battery 5000mAh; 7.2V; 36Wh
- Dual-band radio:
- 868/915 MHz LoRa for receiving and sending corrections
- 450 MHz UHF for receiving corrections
- Use as rover or base
- LoRa up to 8 km (long-range communication between base and rover)
- Protocols:
- Corrections: NTRIP, RTCM3,
- Position output: NMEA, LLH/XYZ
- Data acquisition: RINEX, NMEA, LLH/XYZ, UBX
- IP68-protected
- Temperature resistant from -40°C to 65°C
- Shock-resistant casing
- Dimensions: 128.6x128.6x99.3mm
- Weight: 920g
- Internal memory 16GB
- Accuracies:
- Static: H: 4mm + 0.5ppm | V: 8mm + 1ppm
- PPK: H: 5mm + 0.5ppm | V: 10mm + 1ppm
- RTK: H: 7mm + 1ppm | V: 14mm + 1ppm
Required software
- To operate the receiver, you need the Emlid Flow app. The app can be downloaded for free from the App Store and Google Play
- If you need additional features, you can upgrade to Emlid Flow Pro.
- re is a comparison of the two versions: Comparison
- With the discount code V0F42XIFF1P, you can get the annual license at a discounted price.
- Find out how the upgrade works here here.
Delivery content
- 1x Emlid Reach RS4 Pro
- 1x Emlid Reach RS4
- 2x carrying bag
- 2x USB-C cable
- 2x Long-Range-Radio antenna 860-930 MHz
- 2x UHF antenna 410-470 MHz
- 2x quick release adapter
- 1x Reach RS4 Pro bumper
- 1x Reach RS4 bumper
Please note: We can offer support for this product in German only. Please note: The use of the UHF antenna (410–470 MHz) is subject to official approval or licensing in Germany and many other countries. The buyer is responsible for complying with the applicable national frequency regulations. Use without the required approval may be illegal. (For all other countries: Please check whether a licence is required in your country.)
