The Ebyte E108-GN04Q and E108-GN04Q2 are highly integrated, low-power multi-mode GNSS tracking modules supporting BDS, GPS, GLONASS, and GALILEO constellations, featuring a standard UART interface, 2.7-5.5V operating voltage, NMEA4.11/UBX protocol compatibility, and an integrated ceramic antenna for rapid deployment in vehicle telemetry, UAV navigation, and IoT industrial wearables.
| Specification | Parameter Value |
|---|---|
| Communication Interface | UART |
| Operating Voltage | 2.7V - 5.5V |
| Supported Protocols | NMEA 4.11, UBX |
| Satellite Systems | BDS, GPS, GLONASS, GALILEO |
| Antenna Interface | Integrated Ceramic Antenna |
Key Features
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Multi-Constellation GNSS Architecture: Supports simultaneous reception of BDS, GPS, GLONASS, and GALILEO signals, ensuring high-precision positioning even in challenging urban canyon environments.
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Industry-Standard Protocol Support: Built-in compatibility with NMEA4.11 and UBX protocols via a standard UART interface, facilitating seamless integration with existing industrial microcontrollers and host CPUs.
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Ready-to-Deploy Hardware Integration: Features an integrated ceramic antenna and wide 2.7-5.5V operating voltage, eliminating the need for complex external RF impedance matching circuits.
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Seamless Vendor Drop-in Replacement: Engineered with pin-to-pin and software-level compatibility with mainstream third-party GNSS modules on the market, drastically reducing R&D transition time.
| Parameters | E108-GN04 | E108-GN04S | E108-GN04D | E108-GN04Q | E108-GN04Q2 | E108-GN04G (TTL/232/485) |
|---|---|---|---|---|---|---|
| Chip Solution | M10050 | M10050 | M10050 + QMC5883P | M10050 + QMC5883P | M10050 + QMC5883P | M10050 |
| Constellation | GPS / BDS / GLONASS / GALILEO | unknown | ||||
| Receive Frequency Band | GPS L1 C/A, QZSS L1 C/A/S, GLONASS L10F, BeiDou B1I/B1IC, GALILEO E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN | unknown | ||||
| Operating Temperature | -40 ~ +85 ℃ | unknown | ||||
| Operating Voltage | 2.7 ~ 3.6 V | 2.7 ~ 5.5 V | unknown | |||
| Cold Start Time | ≤ 28 s | unknown | ||||
| Warm Start Time | ≤ 1 s | unknown | ||||
| Recapture Time | ≤ 1 s | unknown | ||||
| Horizontal Positioning Accuracy | 1.5 m | unknown | ||||
| Positioning Update Rate | 3 Hz ~ 25 Hz | unknown | ||||
| Speed Accuracy | 0.05 m/s | unknown | ||||
| Timing Accuracy | 30 ns | unknown | ||||
| Sensitivity | Cold Start: -148 dBm Reacquisition: -160 dBm |
Warm Start: -159 dBm Tracking: -167 dBm |
unknown | |||
| Baud Rate | 4800 ~ 921600 bps | unknown | ||||
| Protocol | NMEA0183 V4.11, UBX | unknown | ||||
| Communication Interface | UART | UART / RS232 / RS485 | ||||
| Power Consumption — Data Capture | 17 mA | 27 mA | 25 mA | 24.3 mA | 26 mA | 19 mA |
| Power Consumption — Tracking | 15 mA | 25.2 mA | 22.5 mA | 24.3 mA | 26 mA | 19 mA |
| Power Consumption — Sleep Mode | - | - | 4 μA | - | - | unknown |
| Product Dimensions | 9.7×10.5×2.4 mm | 12.2×16×2.4 mm | 20×22×7.8 mm | 20×22×7.8 mm | 25×25×8 mm | 50.4×38.4×17 mm |
| Antenna Interface | Stamp Hole | Ceramic Antenna | ||||
Industrial Installation & Wiring
Mounting & Wiring Overview: These surface-mount GNSS modules utilize standard UART communication. For successful hardware integration, simply connect the VCC (2.7-5.5V) and GND pins to a stable power source, and route the UART TX/RX lines directly to the host MCU or a serial server. Ensure the top face (ceramic antenna side) faces the sky with no metallic shielding directly above it for optimal satellite signal acquisition.
Practical Application Scenarios
1. Fleet Telematics and 4G Cellular Integration
When paired with an Ebyte 4G DTU or cellular modem, the E108-GN04Q acts as the core spatial data engine. It feeds real-time NMEA4.11 coordinate data over UART to the DTU, which then pushes the payload to a cloud server via MQTT or TCP/IP. This enables high-precision logistics tracking, vehicle speed monitoring, and geofencing for commercial fleet management.
2. Unmanned Aerial Vehicle (UAV) Flight Control Systems
Given the strict payload limits of drones, the lightweight footprint (starting at 20.0 x 22.0 mm) of the E108 series is highly advantageous. By leveraging the multi-constellation support (BDS/GPS/GLONASS/GALILEO), UAV flight controllers can calculate highly accurate 3D spatial positioning and velocity metrics, reducing hover drift and ensuring reliable return-to-home automation.
3. Industrial IoT Personnel Safety Wearables
For construction or mining personnel tracking, the module’s low power consumption allows integration into battery-operated smart helmets or vests. The wide 2.7-5.5V voltage tolerance seamlessly accommodates Li-ion or Li-Po battery discharging curves without needing complex step-up/down regulators, guaranteeing continuous geographic reporting.
4. Precision Agriculture and Autonomous Farming Equipment
When integrated with Ebyte LoRa modules or serial servers, the E108-GN04Q2 can be deployed on automated tractors or agricultural field sensors. It provides the exact spatial coordinates required for grid-based soil mapping or path planning, minimizing crop overlap and optimizing resource distribution in harsh outdoor environments.
FAQ Section
1. What is the fundamental difference between the E108-GN04Q and E108-GN04Q2 modules?
The core chipset, electrical parameters, communication interfaces (UART), and supported protocols (NMEA4.11, UBX) are identical across both models. The only difference is the physical dimension: the E108-GN04Q measures 20.022.07.8mm, while the E108-GN04Q2 measures 25.025.08.0mm, accommodating different PCB layout requirements and ceramic antenna sizes.
2. Do I need to design external RF matching circuits for the antenna?
No. Both modules come pre-equipped with an integrated ceramic antenna. This highly integrated design eliminates the need for complex external RF impedance matching, reducing bill of materials (BOM) costs and simplifying the hardware design cycle.
3. How do I configure the module and parse the GNSS data on my host MCU?
The modules communicate via a standard UART interface supporting NMEA4.11 and UBX protocols. You can connect it directly to your MCU's UART port to receive standard NMEA sentences (such as $GPGGA,$GPRMC) which contain longitude, latitude, time, and fix status. No proprietary SDK is mandatory for basic data parsing.
4. Is this module a direct replacement for other mainstream GNSS modules in legacy systems?
Yes. Both the E108-GN04Q and E108-GN04Q2 are explicitly designed with software and hardware interface compatibility matching other major GNSS module manufacturers. This ensures integrators can execute a drop-in replacement with minimal PCB revisions or firmware overhauls.
