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Stonex S900+ GNSS Receiver


The Stonex S900+ GNSS RTK receiver is equipped with a high-performance GNSS board (1408 channels) and can support multiple satellite constellations. Through the 4G GSM modem, a fast Internet connection is guaranteed for receiving correction data and carry out precise and accurate surveys.



The Stonex S900+ is equipped with a high-performance GNSS board with 1408 channels and can support multiple satellite constellations: GPS, GLONASS, BeiDou, Galileo, QZSS.

Through the 4G GSM modem, a fast Internet connection is guaranteed for receiving correction data and carry out precise and accurate surveys. In the incredibly compact design, Bluetooth and Wi-Fi modules allow for always reliable data flow to the controller, while the integrated UHF TX/RX radio makes the S900+ the perfect system for a GNSS Base + Rover.

The S900+ is also equipped with optional IMU technology. Quick initialization, tilt up to 60° and corrected coordinates of a point with a single click.


  • 1408 channel GNSS board capable of supporting multiple satellite constellations
  • Internal 4G modem that operates with all world signals
  • Optional IMU system that allows tilted measurements
  • Dual slot for two smart hot swappable batteries gives you up to 12 hours of battery life

Technical Specifications

Board: Unicore UM980
Channels: 1408
GPS: L1 C/A, L1C*, L2P, L2C, L5
Galileo: E1, E5a, E5b, E6
BeiDou: B1I, B2I, B3I, B1C, B2a, B2b*
QZSS: L1, L2, L5
Update Rate: 20Hz
Operating System: Linux
Memory: 8 GB
Static Survey: 2.5 mm + 0.1 ppm RMS (Horizontal)
3.5 mm + 0.4 ppm RMS (Vertical)
RTK (< 30 Km): 5 mm + 0.5 ppm RMS (Horizontal)
10 mm + 0.5 ppm RMS (Vertical)
Code Differential: 0.40 m RMS
SBAS Accuracy: 0.60 m RMS
Internal UHF Radio
Type: Tx – Rx
Frequency Range: 410 – 470 MHz
Channel Spacing: 12.5 KHz / 25 KHz
Transmission Power: 1 watt
Maximum Range: 3-4 km in urban environment
Up to 10 Km with optimal conditions
Size: Φ 157 mm x 76 mm
Weight: 1.19 kg
Operating Temperature: -30 °C to +65 °C (-22°F to 149°F)
Storage Temperature: -40 °C to +80 °C (-40°F to 176°F)
Waterproof/Dustproof: IP67
Shock Resistance: Designed to endure a 2 m pole drop onto a concrete floor with no damage
Vibration: Vibration resistant
Power Supply
Batteries (2): Rechargeable 7.2 V – 3.400 mAh
Voltage: 9 to 28 V DC external power input with over-voltage protection (5 pins Lemo)
Working Time: Up to 12 hours
Charge Time: Typically 4 hours


  • B10+150214 – Stonex S900+, GNSS, 1408Ch, 4G, WiFi, BT
  • B10+160214 – Stonex S900+, GNSS, 1408Ch, 4G, WiFi, BT – Made in Italy
  • 40-450221 – S900+ IMU firmware activation
  • 40-450220 – S900+ UHF firmware activation


Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for Stonex and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.


The S900+ GNSS receiver from Stonex is available through TerrisGPS. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.

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Client Testimonials

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"Thank you for your prompt service. All seems to be working well again. Your techs were very helpful with the troubleshooting."
J.O. - Ground Navigation
"Thanks for all the troubleshooting help, also to John for his assistance and the prompt answers from you guys!"
F.A. - Survey Industry

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