# Pinout

### H-RTK F9P Rover lite

![H-RTK F9P Rover lite - Standard](/files/H0TqUyfykYemczqUU1jm) ![H-RTK F9P Rover lite - 2nd GPS](/files/4eo6zg5DIY7OhmE3VPxl)

### H-RTK F9P Helical & Base

![](/files/gYn6gtnYJvMRPkQDL60U)

### **Standard GPS Port**

| 802980655c9348c58312d974189d41ab |
| -------------------------------- |

| **Pin** | **Signal**          | **Voltage**             |
| ------- | ------------------- | ----------------------- |
| 1(red)  | VCC                 | Power +5V               |
| 2       | RX(in)              | TTL 3.3V                |
| 3       | TX(out)             | TTL 3.3V                |
| 4       | SCL1                | TTL 3.3V                |
| 5       | SDA1                | TTL 3.3V                |
| 6       | SAFETY\_SWITCH      | TTL 3.3V                |
| 7       | SAFETY\_SWITCH\_LED | TTL 3.3V                |
| 8       | VDD\_3V3            | Power +3.3V             |
| 9       | BUZZER-             | Open drain Output 0\~5V |
| 10      | GND                 | GND                     |

### 2nd GPS Port

(For "2nd GPS" version)

| 802980655c9348c58312d974189d41ab |
| -------------------------------- |

| **Pin** | **Signal** | **Voltage** |
| ------- | ---------- | ----------- |
| 1(red)  | VCC        | Power +5V   |
| 2       | RX(in)     | TTL 3.3V    |
| 3       | TX(out)    | TTL 3.3V    |
| 4       | SCL1       | TTL 3.3V    |
| 5       | SDA1       | TTL 3.3V    |
| 6       | GND        | GND         |

### UART 2 Port 

(Available in Helical Version)

| **Pin** | **Signal** | **Voltage** |
| ------- | ---------- | ----------- |
| 1(red)  | VCC        | Power +5V   |
| 2       | RX2 (in)   | TTL 3.3V    |
| 3       | TX2 (out)  | TTL 3.3V    |
| 4       | NC         | -           |
| 5       | PPS        | 3.3V        |
| 6       | GND        | GND         |


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