E220P-400T22S LoRa spread spectrum technology wireless transmission monitoring
[IC]：LLCC68
[Frequency]：410.125~493.125MHz
[Power]：22dBm
[Distance]：7km
[Size]：16*26mm
[Introduction]：E220P-400T22S is a new generation of (UART), based on Semtech's original LLCC68 chip design. It has a variety of transmission methods,The module has built-in PA+LNA, and the communication distance can reach 7km under ideal conditions.
| 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 |