E22-230T33S LoRa solution 230MHz High-power LoRa spreading Relay networking Wireless serial port module
[Chip solution]：-
[Frequency]：220.125 ~ 236.125MHz
[Transmission power]：33dBm
[Communication distance]： 12km
[Size]：25*40.5mm
[Product weight]：5.4±0.1g
[Introduction]：E22-230T33S is a wireless serial port module (UART) based on SEMTECH's LoRa solution. It has multiple transmission modes, working at 220.125MHz~236.125MHz, (default 230.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltages
| No. | Name | Direction | Function |
| 1 | GND | - | Module ground |
| 2 | VCC | - | Module power supply positive reference, Power supply： 3.3〜5.5V DC |
| 3 | AUX | Output | The user wakes up the external MCU and outputs low level during power on self-test initialization; (can be suspended) |
| 4 | TXD | Output | TTL UART outputs, connects to external (MCU, PC) RXD input pin. |
| 5 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) RXD output pin. |
| 6 | Ml | Input (weak pull-up) | Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 7 | MO | Input (weak pull-up) | Work with MO to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 11 | ANT | Output | Antenna(high frequency signal output, 50 ohm) |
| 12 | GND | - | Ground |
| 13 | GND | - | Ground |
| 14 | GND | - | Ground |
| 18 | NC | - | Empty |
| 19 | NC | - | Empty |
| 20 | NC | - | Empty |
| 21 | +3.3V | - | Power pin when program is loading (suspend, no need to connect, cannot be used as power supply ) |
| 22 | NC | - | Empty |
| 23 | GND | - | Module Ground |
| 24 | NC | - | Empty |