Serial port
From left to right, looking into the battery bay:
RS232 with 3.3 V / 0V levels
| pin | Features | |
| GND | earth | connected to the battery |
| VMAIN | voltage | battery voltage at power on |
| UART_T | Tx | |
| UART_R | Rx |
Specifications:
- connector: JST PH 2 mm
- 4 pins
- Length: 150 mm
- Cable: 22AWG PVC
- Note: color variations and their connections may vary
| Pins pitch | 2 mm |
| Pin no. | 4 |

On all items we offer warranry 24 months.
Spare parts and battries capacity 6 months.
We provide warranty and post warranty services.


