Product Description
Stonex S999 GNSS Receiver
The Stonex S999 GNSS Receiver is a professional dual-camera RTK GNSS receiver designed for surveyors who need accuracy, speed, flexibility, and advanced field productivity. Built with 1408 multi-constellation channels, the S999 supports major GNSS constellations and signals, including GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS, and SBAS, providing reliable positioning performance for demanding surveying and construction layout workflows.
The S999 combines advanced GNSS tracking, integrated IMU tilt compensation, dual-camera visual workflows, 4G connectivity, UHF radio options, and rugged IP68 protection in a compact and lightweight receiver. Its integrated IMU allows pole-tilt measurements up to 60°, helping surveyors work faster without needing to keep the pole perfectly level at every point.
A major advantage of the S999 is its dual-camera system. The front camera supports visual stakeout by helping the operator identify and navigate to the target point more clearly, while the lower camera supports precise framing and photogrammetric applications. This expands the receiver beyond standard RTK measurement and makes it useful for visual stakeout, inaccessible point measurement, point cloud generation, mesh creation, and field documentation workflows.
The S999 is ideal for professionals who need a high-performance GNSS rover for topographic surveys, boundary work, construction layout, staking, roadwork, infrastructure, utilities, GIS/mapping, and advanced measurement applications where speed and flexibility matter.
Major Features
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1408 multi-constellation GNSS channels
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Supports GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS, and SBAS
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Advanced IMU tilt compensation up to 60°
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RTK + IMU horizontal uncertainty: 5 mm + 0.7 mm per degree of tilt
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Dual-camera system for visual stakeout and photogrammetric applications
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Front camera assists with visual stakeout and point navigation
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Lower camera supports precise framing and inaccessible point measurement workflows
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Supports point cloud and mesh generation through Cube-a / Cube-3D workflows
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Integrated 4G modem for field connectivity
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Optional/integrated UHF radio support with 410–470 MHz and 902.4–928 MHz bands
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Internal memory: 32 GB
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Position rate up to 50 Hz
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Fast signal reacquisition under 1 second
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RTK signal initialization under 5 seconds
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Initialization reliability greater than 99.9%
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Bluetooth and Wi-Fi communication
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Web UI for device status, settings, upgrades, and data download
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Type-C port for charging and data transfer
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Built-in battery with up to 10 hours working time
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PD fast charge support, typically 4-hour charging time
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Rugged IP68 waterproof and dustproof design
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Designed to endure a 2 m pole drop on hardwood floor with no damage
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Compact and lightweight design: Ø139 mm × 74 mm, 1065 g
Specification Table — Stonex S999 GNSS Receiver
| Specification | Details |
|---|---|
| Manufacturer | Stonex |
| Model | S999 |
| Product Type | Dual Camera RTK GNSS Receiver |
| GNSS Channels | 1408 |
| Satellite Signals Tracked | GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, SBAS |
| GPS Signals | L1 C/A, L2P, L2C, L5 |
| GLONASS Signals | L1, L2, L3 |
| BeiDou Signals | B1I, B2I, B3I, B1C, B2a, B2b |
| Galileo Signals | E1, E5a, E5b, E6 |
| QZSS Signals | L1, L2, L5, L6 |
| IRNSS | L5 |
| PPP | B2b PPP, HAS |
| Position Rate | Up to 50 Hz |
| Signal Reacquisition | Less than 1 second |
| RTK Signal Initialization | Less than 5 seconds |
| Hot Start | Typically less than 15 seconds |
| Initialization Reliability | Greater than 99.9% |
| Internal Memory | 32 GB |
| IMU Rate | 400 Hz |
| Tilt Range | 0° to 60° |
| RTK + IMU Accuracy | Horizontal uncertainty: 5 mm + 0.7 mm/° of tilt |
| High Precision Static Horizontal | 2.5 mm + 0.1 ppm RMS |
| High Precision Static Vertical | 3.5 mm + 0.4 ppm RMS |
| Network RTK Horizontal | 5 mm + 0.5 ppm RMS |
| Network RTK Vertical | 10 mm + 0.5 ppm RMS |
| PPP Accuracy | Less than 20 cm RMS |
| SBAS Accuracy | Less than 60 cm RMS |
| Integrated GNSS Antenna | High-accuracy multi-constellation antenna, zero phase center, internal multipath suppression board |
| Internal Radio | Tx/Rx 1 W |
| Radio Frequency Range | 410–470 MHz and 902.4–928 MHz |
| Radio Channel Spacing | 12.5 KHz / 25 KHz |
| Radio Range | 3–4 km in urban environment, up to 10 km with optimal conditions |
| Internal Modem | LTE FDD, LTE TDD, UMTS, GSM support |
| SIM | Nano SIM card |
| Below Camera Resolution | 2 MP |
| Below Camera Frame Rate | 30 frames/s |
| Below Camera Field of View | 72° |
| Front Camera Resolution | 2 MP |
| Front Camera Image Frame Rate | 5 frames/s |
| Front Camera Video Frame Rate | 30 frames/s |
| Front Camera Field of View | 88° |
| I/O Connector | Type-C for charging and data transfer |
| Bluetooth | 2.1 + EDR, V5.0 |
| Wi-Fi | 802.11 a/ac/b/g/n |
| Web UI | Software upgrade, status/settings management, and data download |
| Reference Outputs | RTCM 3.x |
| Navigation Outputs | NMEA 0183 |
| Battery | Built-in 3.6 V, 13.6 Ah, 48.96 Wh battery |
| Charging | 12 V DC, PD fast charge support |
| Working Time | Up to 10 hours |
| Charging Time | Typically 4 hours |
| Dimensions | Ø139 mm × 74 mm |
| Weight | 1065 g |
| Operating Temperature | -40°C to +65°C / -40°F to +149°F |
| Storage Temperature | -40°C to +80°C / -40°F to +176°F |
| Waterproof / Dustproof | IP68 |
| Shock Resistance | Designed to endure a 2 m pole drop on hardwood floor with no damage |
| Humidity | 100% non-condensing |
Common Applications
The Stonex S999 is ideal for:
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RTK rover surveying
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Topographic surveys
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Construction layout and stakeout
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Boundary and cadastral work
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Roadway and infrastructure projects
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Utility mapping
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GIS and mapping workflows
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Visual stakeout
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Inaccessible point measurement
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Photogrammetric field applications
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Point cloud and mesh workflows
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As-built documentation
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Site verification
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Survey crews needing fast tilt compensation and camera-assisted field work
Why Buy the Stonex S999 from PRISM GeoSystems?
Buying a GNSS receiver is not just about the receiver itself — it is about getting the correct system configuration, software workflow, accessories, training, and support so your crew can use it properly in the field.
When you purchase the Stonex S999 GNSS Receiver from PRISM GeoSystems, you benefit from:
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Correct package configuration: We help match the S999 with the right data collector, field software, radio settings, rover pole, bipod, chargers, batteries, brackets, and accessories.
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Workflow support: We can help with RTK setup, network rover setup, base/rover configuration, IMU calibration, visual stakeout workflow, and field software use.
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Training-focused support: Advanced GNSS features like IMU tilt, cameras, visual stakeout, inaccessible point measurement, and point cloud workflows are only valuable when your team understands how to use them.
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Local troubleshooting: If you run into connection, radio, Bluetooth, network, software, or accuracy questions, you have a local support team to contact.
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One-stop source: Sales, rentals, service, calibration, software support, accessories, and training from one place.
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Southern California availability: Serving San Diego, Los Angeles, San Bernardino, Colton, San Marcos, Imperial, Riverside, Orange County, and surrounding Southern California areas.
*Please Note: Due to the fact that we are brick and mortar store with daily customer traffic, items may be sold before updating our online inventory. Please call (619)283-3137 to confirm availability.
