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| 1. GPS Chip | 11. GPS Signal Pin (J3 Pin3) |
| 2. Flash Memory Flash Memory | 12. NB UART RX (J3 Pin4) |
| 3. Micro SIM Card Holder | 13. NB UART TX (J3 Pin5) |
| 4. NBIoT Chip | 14. NB Power On Pin (J3 Pin6) |
| 5. Mini USB | 15. NB Reset Pin (J3 Pin7) |
| 6. Network Signal Indicator light | 16. GPS SafeBootMode (J3 Pin8) |
| 7. GPS Antenna Interface | 17. GPS Reset Pin (J3 Pin9) |
| 8. LTE Antenna Interface | 18. GND (J3 Pin10) |
| 9. 1.8V Output Pin (J3 Pin1) | 19. Power Indicator Light |
| 10. 3.3V Power Input (J3 Pin2) | 20. Module Status Light |
