[Carrier frequency]：220.125～236.125 MHz
[Transmission power]：30dBm
[Communication distance]：10km
[Product weight]：7.2±0.5g
[Introduction]：E22-230T30E is a new generation of LoRa wireless spread spectrum module, a wireless serial port module designed based on SEMTECH's LoRa solution radio frequency chip. It has a variety of transmission methods, works in the 220.125~236.125MHz frequency band, is compatible with 3.3V and 5V IO port voltages, adopts MINI PCI-e standard packaging, and has UART, RS485, RS232, and USB communication interface options to facilitate user development and use. Adopting a new generation of LoRa spread spectrum technology, this solution has longer transmission distance and faster speed; supports air wake-up, wireless configuration, carrier monitoring, automatic relay, communication key and other functions, supports sub-packet length setting, and can provide customized development Serve.
| Pin No. | Item | Direction | Description |
| 1 | TO | output | Used to indicate the working status of the module; the user wakes up the external MCU , and outputs a low level during the initialization of the power-on self-test; (can be suspended) |
| 2 | VCC | Input | Power input 5.0V |
| 3 | M0 | Input ( very weak pull-up ) | Cooperate with M1 to determine the 4 working modes of the module (not floating, if not used, it can be grounded) |
| 4 | GND | - | power reference ground |
| 5 | Ml | Input ( very weak pull-up ) | Cooperate with M0 to determine the 4 working modes of the module (not floating, if not used, it can be grounded) |
| 6 | NC | - | - |
| 7 | NC | - | - |
| 8 | NC | - | - |
| 9 | GND | - | power reference ground |
| 10 | SMD_DI0 | input /output | Program download data interface ( the module needs to be reset or erased before SWD programming ) |
| 11 | RXD | input | TTL serial port input, connect external TXD output pin |
| 12 | swD_CLK | input /output | Program download clock interface ( the module needs to be reset or erased before SWD programming ) |
| 13 | TXD | output | TTL serial port output, connect external RXD input pin |
| 14 | NC | - | - |
| 15 | GND | - | power reference ground |
| 16 | NC | - | - |
| 17 | NC | - | - |
| 18 | GND | - | power reference ground |
| 19 | NC | - | |
| 20 | NC | - | power reference ground |
| 21 | GND | - | power reference ground |
| 22 | RESET | input | The input low level module enters the hardware reset state, and the input high level module recovers the normal working state. This function is used for the reset operation in emergency |
| 23 | NC | - | - |
| 24 | VCC | input | Power input 5.0V |
| 25 | NC | - | - |
| 26 | GND | - | power reference ground |
| 27 | GND | - | power reference ground |
| 28 | NC | - | - |
| 29 | GND | - | power reference ground |
| 30 | NC | - | - |
| 31 | NC | - | - |
| 32 | NC | - | - |
| 33 | NC | - | - |
| 34 | GND | - | power reference ground |
| 35 | GND | - | power reference ground |
| 36 | USB_D- | input /output | D- of other external USB devices |
| 37 | GND | - | power reference ground |
| 38 | USB_D+ | input /output | D+ connected to other USB devices |
| 39 | VCC | input | Power input 5.0V |
| 40 | GND | - | power reference ground |
| 41 | VCC | input | Power input 5.0V |
| 42 | NC | - | - |
| 43 | GND | - | power reference ground |
| 44 | NC | - | - |
| 45 | RS232_RXD | input | External TXD of other RS232 devices |
| 46 | NC | - | - |
| 47 | RS232_TXD | output | RXD connected to other RS232 devices |
| 48 | NC | - | - |
| 49 | RS485_A | input /output | A terminal connected to other RS485 devices |
| 50 | GND | - | power reference ground |
| 51 | RS485_B | input /output | Connect to the B terminal of other RS485 devices |
| 52 | VCC | input | Power input 5.0V |