[Frequency]:850.125~930.125MHz
[Power]:30dBm
[Distance]:10km
[Size]:24*43mm
[Weight]:11±0.2g
[Introduction]:E22-900T30D is a wireless module (UART) based on SEMTECH's LoRa solution. It has multiple transmission modes and works at 850.125MHz~930.125MHz (default 868.125MHz). Adopting LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage.
| Serial Number | pin | Pin direction | Remark |
| 1 | M0 | Input (very weak pull-up) | In conjunction with M1, it determines the module's four operating modes (it cannot be left floating; if not in use, it can be grounded). |
| 2 | M1 | Input ( very weak pull-up ) | In conjunction with M0, it determines the module's four operating modes (it cannot be left floating; if not in use, it can be grounded). |
| 3 | RXD | Input | TTL serial port input, connected to the external TXD pin (configurable as open drain or pull-up input, see manual for details). |
| 4 | TXD | Output | TTL serial port output, connected to the external RXD pin (configurable as open-drain or push-pull output, see manual for details ). |
| 5 | TO | Output | Used to indicate the module's operating status; outputs a low level during the power-on self-test initialization period when the user wakes up the external MCU. It can be configured as an open-drain output or a push-pull output; see parameter settings for details. (Can be left floating) |
| 6 | VCC | Input | Module power supply positive reference, voltage range: 3.0V~5.5V DC |
| 7 | GND | Input | Module ground wire |
| 8 | Fixing hole | Fixing hole | |
| 9 | Fixing hole | Fixing hole | |
| 10 | Fixing hole | Fixing hole | |
| 11 | Fixing hole | Fixing hole |

[Chip solution]:LoRa solution
[Frequency]:850.125~930.125MHz
[Transmission power]:22dBm
[Communication distance]:5km
[Size]:45.3*27.8*11.2mm
[Product weight]:8.4±0.1g

[Frequency]:850.125~930.125MHz
[Power]:22dBm
[Distance]:5km
[Size]:21*36mm
[Weight]:6.5±0.2g

[Chip solution]:-
[Frequency]:850.125~930.125MHz
[Transmitter power]:22dBm
[Communication diatance]:5km
[Size]:16*26mm
[Product weight]:2.1±0.1g

[Chip solution]:LoRa solution
[Frequency]:850.125~930.125MHz
[Transmitter power]:30dBm
[Communication distance]:10km
[Size]:25*40.5mm
[Product weight]:5.8±0.1g