E32-433T20S SX1278 Long-distance anti-interference transparent transmission LoRa micro module
[IC]：SX1278
[Frequency]：410~441MHz
[Power]：20dBm
[Distance]：5km
[Size]：16 * 26mm
[Introduction]：E32-433T20S is a wireless serial port module (UART) based on SEMTECH's SX1278 RF chip. It has multiple transmission modes, working in the 410MHz~441MHz, (default 433MHz), LoRa spread spectrum technology.
| No. | Name | Direction | Features |
|---|---|---|---|
| 1 | GND | - | Ground |
| 2 | GND | - | Ground |
| 3 | GND | - | Ground |
| 4 | GND | - | Ground |
| 5 | M0 | Input （weak pull-up） | Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 6 | M1 | Input （weak pull-up） | Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 7 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. |
| 8 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. |
| 9 | AUX | Output | Used to indicate the working status of the module; The user wakes up the external MCU and outputs low level during power-on self-check initialization; (can be left floating) |
| 10 | VCC | - | Power supply: 2.3~ 5.5V DC |
| 11 | GND | - | Ground |
| 12 | NC | - | Empty Pin |
| 13 | GND | - | Ground |
| 14 | NC | - | Empty Pin |
| 15 | NC | - | Empty Pin |
| 16 | NC | - | Empty Pin |
| 17 | NC | - | Empty Pin |
| 18 | NC | - | Empty Pin |
| 19 | GND | - | Ground |
| 20 | GND | - | Ground |
| 21 | ANT | - | Antenna |
| 22 | GND | - | Ground |