E22-900T22S Ebyte UART 5Km Range 868Mhz 915Mhz 22dBm SMD CE FCC LoRa Wireless Transmitter RF Module Semtech LoRa solution
[Frequency]：850.125~930.125MHz
[Power]：22dBm
[Distance]：5km
[Size]：16*26mm
[Product weight]：2.1±0.1g
[Introduction]：E22-900T22S is a new generation of LoRa wireless module. It is a wireless module based on the UART serial communication of SEMTECH's LoRa solution. The LoRa module has a variety of transmission methods and works in the (850.125~930.125MHz) frequency band (default 868.125MHz). The LoRa expansion frequency technology, TTL level output, compatible with 3.3V and 5V IO port voltages.
| No. | Name | Direction | Function |
|---|---|---|---|
| 1 | NRST | Input- | Module reset pin, low reset |
| 2 | GND | Ground | |
| 3 | GND | ||
| 4 | NC | ||
| 5 | NC | ||
| 6 | NC | ||
| 7 | NC | ||
| 8 | GND | Ground | |
| 11 | GND | Ground | |
| 12 | ANT | Antenna | |
| 13 | GND | Ground | |
| 14 | GND | Ground | |
| 15 | GND | Ground | |
| 16 | GND | Ground | |
| 19 | GND | Ground | |
| 20 | M0 | Input（weak pull-up） | Work with M1 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 21 | M1 | Input（weak pull-up） | Work with M0 to decide 4 working modes of module (not suspended, if not used, could be grounded). |
| 22 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be configured as open-drain or pull-up input. |
| 23 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can be configured as open-drain or push-pull output |
| 24 | AUX | Output | To indicate module ’ s working status & wakes up the external MCU. During the procedure of self-check initialization, the pin outputs low level. Can be configured as push-pull output (suspending is allowed). |
| 25 | VCC | Power supply ：2.3~ 5.2V DC | |
| 26 | GND | Ground | |