Navisys GR-U01 RS232 GNSS Receiver (Industrial Grade, U-blox M10 "10th Generation" GNSS Chip, 1.5m Accuracy, 18Hz Update Rate, Ultra-low Power Consumption, IPX7 Waterproof, Fully EMI Shielded, Operating Temperatures from -40°C to +85°C)
Navisys GR-U01 RS232 GNSS Receiver (Industrial Grade, U-blox M10 "10th Generation" GNSS Chip, 1.5m Accuracy, 18Hz Update Rate, Ultra-low Power Consumption, IPX7 Waterproof, Fully EMI Shielded, Operating Temperatures from -40°C to +85°C)
Country of Origin: Taiwan
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Volume Discount Table
| Minimum Qty | Discount |
|---|---|
| 5 + | 3% off |
| 10 + | 4% off |
| 50 + | 5% off |
| 100 + | 7% off |
The NaviSys GR-U01 (RS232 version) is an industrial-grade GNSS receiver built on u-blox’s M10 Base GNSS engine, featuring ultra-low power consumption at just 16 mA without compromising its 1.5-meter accuracy.
The GR-U01 supports concurrent tracking of all four L1 GNSS constellations—GPS, GLONASS, Galileo, and BeiDou—with an update rate of up to 18 Hz. Advanced anti-jamming, RF interference detection, and spoofing detection/reporting help keep positioning reliable in challenging environments.
Despite its capability set, the GR-U01 stays compact at 40 × 45 × 16 mm. It is an industrial and commercial grade receiver with IPX7 waterproofing, full EMI shielding, and a wide operating range from −40°C to +85°C.
RS232 interface · 22 / 19 mA · 1.5 m accuracy · Up to 18 Hz · GPS + GLONASS + Galileo + BeiDou · IPX7 · 40 × 45 × 16 mm · 3 m cable (GR-U01R)
Key Features
RS232 Industrial Interface
- RS232 serial output for industrial hosts
- Typical RS232 current: 22 / 19 mA
- 3 m cable on GR-U01R
- Supply: 3.3–5.5 V
→ Direct RS232 connection for PCs, PLCs, and industrial controllers
Ultra-Low Power
- RS232: 22 / 19 mA (acquisition / tracking)
- TTL: 19 / 16 mA
- USB: 59 / 56 mA
- u-blox M10 Base GNSS engine
→ Low current draw for long-running industrial systems
1.5 m Positioning
- 1.5 m horizontal (GPS + QZSS + SBAS)
- CEP 50%, 24 hr static, −130 dBm
- u-blox M10 engine
→ Meter-class accuracy with a proven multi-constellation L1 engine
Multi-Constellation · High Update Rate
- Concurrent GPS, GLONASS, Galileo, BeiDou (L1)
- Default 1 Hz; up to 18 Hz (GPS only)
- SBAS: WAAS, EGNOS, MSAS, GAGAN · QZSS L1S SLAS
→ Faster refresh when you need denser track points
Interference & Spoofing Awareness
- Anti-jamming support
- RF interference detection
- Spoofing detection and reporting
→ Extra resilience when the RF environment is noisy or hostile
Industrial Form Factor
- 40 (W) × 45 (L) × 16 (H) mm
- IPX7 waterproof
- Fully EMI shielded
- Operating temperature: −40°C to +85°C
→ Built for outdoor and industrial deployment, not just lab benches
u-blox U-Center 2 Tool
The GR-U01 uses the u-blox M10 chip and is fully compatible with the latest u-center 2 software for fast GNSS receiver configuration. u-blox provides user and developer documentation to support evaluation and development.
U-center 2 is designed for u-blox M10 and F10 products. It is free from the u-blox website, and a copy is also available in the Product Resources section of this page.
Navisys NaviViewerUx Tool
In addition to U-Center 2, Navisys provides NaviViewerUx for convenient configuration and diagnostics of the GR-U01 GNSS receiver.
Receiver Specifications
GNSS Receiver Type
- u-blox M10 engine
- GPS, SBAS: L1 C/A — 1575.42 MHz
- QZSS: L1 C/A/S — 1575.42 MHz
- Galileo: E1 B/C — 1575.42 MHz
- GLONASS: L1OF — 1598.0625~1605.375 MHz
- BeiDou: B1I — 1561.098 MHz; B1C — 1575.42 MHz
Accuracy
| Horizontal position | 1.5 m (GPS + QZSS + SBAS) CEP, 50%, 24 hr static, −130 dBm, 6+ SVs for each system |
| Velocity | <0.05 m/s (speed) · <0.3° (heading) · 50% @ 30 m/s |
| Time pulse | RMS: 30 ns · 99%: <60 ns 0.5 ms for PPS over USB |
TTFF (Time to First Fix)
| Hot start | 1 s |
| Cold start | 28 s: GPS + GAL 23 s: GPS + GAL + GLO 27 s: GPS + GAL + BDS B1I (default) 28 s: GPS + GAL + BDS B1C 23 s: GPS + GAL + GLO + BDS B1C |
Sensitivity (Autonomous)
| Acquisition | −148 dBm (GPS & Galileo or more) |
| Tracking | −167 dBm (GPS & Galileo or more) |
Measurement Data Output
- UART: N,8,1 · baud 4800, 9600, 19200, 38400 (default), 57600, 115200, 230400, 460800, 921600
- NMEA versions 2.1, 2.3, 4.0, 4.10, and 4.11 (default)
- UBX (u-blox proprietary)
- Sentences: GGA, GLL, GSA, GSV, RMC, VTG, TXT
- Datum: WGS-84
Navigation Update Rate
| Default | 1 Hz |
| GPS + GAL + GLO + BDS B1C | 5 Hz |
| GPS + GAL + BDS B1C | 8 Hz |
| GPS + GAL + BDS B1I | 5 Hz |
| GPS + GAL + GLO | 7 Hz |
| GPS + GAL | 10 Hz |
| GPS only | 18 Hz |
Dynamics & Limits
| Max. altitude | < 80,000 m |
| Max. velocity | < 500 m/s |
| Dynamics | < 4 g |
| Augmentation | SBAS: WAAS, EGNOS, MSAS, GAGAN · QZSS (L1S SLAS) |
Power
| Power consumption | (29 GNSS SVs fixed for tracking) USB: 59 / 56 mA · RS232: 22 / 19 mA · TTL: 19 / 16 mA |
| Power supply | 3.3 ~ 5.5 V |
| Backup power | 3.3 V |
Mechanical & Environment
| Dimension | 40 (W) × 45 (L) × 16 (H) mm |
| Cable length | 1.5 m for GR-U01U (default, customizable) 3 m for GR-U01R (RS232) <1 m for GR-U01T |
| Operating temperature | −40°C to +85°C (−20~60°C for backup battery) |
| Storage temperature | −40°C to +85°C (−40~60°C for backup battery) |
What's in the Box
- Navisys GR-U01 GNSS Receiver × 1
Product Resources
Official Documents
Downloads
This GR-U01 TTL / RS232 variant uses a serial (UART) interface rather than USB. No USB driver install is required for the receiver itself. Connect via a compatible RS-232 port or TTL/UART host, then use the tools below for configuration and diagnostics.
Tools
How-to Articles and Blogs
Tech Support Topics and Forums
