[Frequency]：433MHz
[Power]：22dBm
[Size]：16*26mm
[Weight]：2.3±0.1g
[Introduction]：E22-400T22S is a wireless serial port module (UART) based on SEMTECH's LoRa solution radio frequency chip. It has a variety of transmission modes, working at 410.125MHz~493.125MHz, (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltages.
| Operating parameter | Performance | Remark |
|---|---|---|
| Operating frequency | 410.125~493.125MHz | Support ISM band |
| Tx power | 22 dBm | - |
| Receiving sensitivity | -147dbm | Air data rate is 2.4kbps |
| Air data rate | 0.3k~62.5kbps | Controlled via user’s programming |
| Distance for reference | 5500m | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 2.4kbps |
| Size | 16 * 26 mm | - |
| Antenna | IPEX/stamp hole | 50 ohm impedance |
| Communication interface | UART | - |
| Package | SMD | - |
| Main parameter | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|
| Operating voltage | 2.3 | 5.0 | 5.5 | V | ≥5.0 V ensures output power |
| Communication level | - | 3.3 | - | V | For 5V TTL, It is recommended to add level conversion |
| TX current | - | 133 | - | mA | Instant power consumption |
| RX current | - | 11 | - | mA | - |
| Sleep current | - | 469 | - | μA | Software is shut down |
| Operating temperature | -40 | - | +85 | ℃ | - |
| No. | Name | Direction | Function |
|---|---|---|---|
| 1 | NRST | Input | Module reset pin, low reset |
| 2 | GND | - | Ground |
| 3 | NC | - | empty |
| 4 | NC | - | empty |
| 5 | NC | - | empty |
| 6 | NC | - | empty |
| 7 | NC | - | empty |
| 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（weakpull-up） | Work with M1 to decide 4 working modes of module (not suspended, if notused, could be grounded). |
| 21 | M1 | Input（weakpull-up） | Work with M0 to decide 4 working modes of module (not suspended, if notused, could be grounded). |
| 22 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can beconfigured as open-drain or pull-up input. |
| 23 | TXD | Output | TTL UART outputs, connects to external RXD (MCU, PC) input pin. Can beconfigured as open-drain or push-pull output |
| 24 | AUX | Output | To indicate module ’ s working status & wakes up the external MCU. During theprocedure of self-check initialization, the pin outputs low level. Can beconfigured as push-pull output (suspending is allowed). |
| 25 | VCC | - | Power supply ：2.3~ 5.2V DC |
| 26 | GND | - | Ground |
