[Communication interface]：UART
[Operating voltage]：2.7-5.5V
[Communication protocol]：Support NMEA 4.11
[Antenna interface]：Ceramic antenna
[Product size]：20.0*22.0*7.8mm
[Introduction]：E108-GN04D is a high-performance, highly integrated, low-power, low-cost multi-mode satellite positioning and navigation module that supports GPS/BDS/GNSS/GLONASS/GALILEO satellite positioning. It is small in size and low in power consumption. It can be used in GNSS positioning applications such as vehicle navigation, smart wearables, and drones. It also provides software and hardware interfaces compatible with other module manufacturers, and supports multiple ways to connect to other peripherals, greatly reducing the user's development cycle.
Official StoreWorking parameters
| Main parameters | performance | Remarks | ||
| Minimum value | Typical value | Maximum value | ||
| Operating voltage (V) | 2.7 | 5.0 | 5.5 | Exceeding 5.5V may burn the module |
| Communication level (V) | - | 3.3 | - | Using 5V TTL is risky and burns out |
| Working temperature (℃) | -40 | - | +85 | Industrial grade design |
| Storage temperature | -50℃ | - | -125℃ | |
| humidity | 5% | - | -95%RH | Non-condensing |
Hardware parameters
| Main parameters | description | Remarks |
| Baud rate (bps) | 4800~921600 | Default 38400 |
| Data bits | 8bit | - |
| Stop bit | 1 | - |
| Communication interface | UART | - |
| Product size | 20*22*7.8mm | ±0.2mm |
| Antenna interface | Ceramic antenna | - |
| Communication protocol | Support NMEA V4.11 | - |
| Positioning update rate | 3Hz ~ 25Hz | The maximum fixed update frequency can reach 25Hz |
| Supported positioning system | BDS/GPS/GLONASS/ GALILEO | GPS L1 C/A, QZSS L1 C/A/S, GLONASS L10F,BeiDou B1I/B1C, GALILEO E1B/C,SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN |
| Height limit | 80000m | - |
| Speed limit | 500m/s | - |
| Gravity acceleration limit | ＜4g | - |
| Product weight | 7.9 | ±0.1g |
GPS performance parameters
| category | Indicator item | Typical value | unit | |
| Positioning time (Test condition 1) | Cold start | 28 | s | |
| Hot start | 1 | s | ||
| Re-capture | 1 | s | ||
| sensitivity (Test condition 2) | Cold start | -148 | dBm | |
| Hot start | -159 | dBm | ||
| Re-capture | -160 | dBm | ||
| tracking | -167 | dBm | ||
| precision (Test condition 3) | Horizontal positioning accuracy CEP | 1.5 | m | |
| Speed positioning accuracy | 0.05 | m/s | ||
| Timing accuracy | RMS | 30 | ns | |
| 99% | 60 | ns | ||
| Power consumption (Test condition 4) | E108-GN04 captures current | 17 | mA | |
| E108-GN04S capture current | 27 | |||
| E108-GN04D captures current | 25 | |||
| E108-GN04 tracking current | 15 | mA | ||
| E108-GN04S tracking current | 25.2 | |||
| E108-GN04D tracking current | 22.5 | |||
| E108-GN04D sleep current | 4 | uA | ||
Note: The above results are GPS/Beidou dual-mode operation mode; the highest altitude can reach 18,000 meters, but the accuracy of the data will be biased after exceeding 10,000 meters.
[Test condition 1]: The number of received satellites is greater than 6, the signal strength of all satellites is -130dBm, the average value is taken from 10 tests, and the positioning error is less than 10 meters.
[Test condition 2]: The noise figure of the external LNA is 0.8, the number of received satellites is greater than 6, and the received signal strength value under the condition of locking or non-locking within five minutes.
[Test condition 3]: Open and unobstructed environment, continuous 24-hour boot test, 50% CEP.
[Test condition 4]: The number of received satellites is greater than 6, and the signal strength of all satellites is -130dBm.