[Product size]：25*40.5mm
[Communication distance]：16km
[Transmit power]：33dBm
[Carrier frequency]：410.125~493.125MHz
[Product weight]：5.8±0.1g
[Introduction]：E22-400T33S is a wireless serial port module (UART) based on SEMTECH's LoRa solution, with an operating frequency of 410.125~493.125MHz (default 433.125MHz), TTL level output, and is compatible with 3.3V and 5V IO port voltages.
| Main parameter | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|
| Operating voltage | 3.3 | 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 | - | 1000 | - | mA | Instant power consumption |
| RX current | - | 13 | - | mA | - |
| Sleep current | - | 2 | - | μA | Software is shut down |
| Operating temperature | -40 | - | +85 | ℃ | - |
| Operating parameter | Performance | Remark |
|---|---|---|
| Operating frequency | 410.125~493.125MHz | Support ISM band |
| Tx power | 33 dBm | - |
| Receiving sensitivity | -128dbm | Air data rate is 2.4kbps |
| Air data rate | 2.4k~62.5kbps | Controlled via user’s programming |
| Distance for reference | 16km | Test condition：clear and open area, antenna gain: 5dBi，antenna height: 2.5m，air data rate: 2.4kbps |
| Size | 25*40.5 mm | - |
| Antenna | IPEX/stamp hole | 50 ohm impedance |
| Communication interface | UART | - |
| Package | SMD | - |
| Serial number | Pins | Pin Direction | Remarks |
| 1 | GND | Input | Module Ground |
| 2 | GND | Input | Module Ground |
| 3 | VCC | Input | Module power supply positive reference, voltage range: 4.5 to 15V DC |
| 4 | VCC | Input | Module power supply positive reference, voltage range: 4.5 to 15V DC |
| 5 | RESET | Input | Module reset pins |
| 6 | AUX | Output | Used to indicate the module operating status; user wakes up the external MCU and outputs low during power-on self-test initialization evel; (can be suspended) |
| 7 | TXD | Output | TTL serial output, connected to the external RXD input pin; |
| 8 | RXD | Input | TTL serial input, connected to the external TXD output pin; |
| 9 | M1 | Input (very weak pull-up) | and MO work together to determine the 4 modes of operation of the module (not suspended, grounded if not in use) |
| 10 | MO | Input (very weak pull-up) | Works with M1 to determine the 4 operating modes of the module (not suspended, can be grounded if not in use) |
| 11 | GND | Input | Module Ground |
| 12 | GND | Input | Module Ground |
| 13 | ANT | Output | Antenna interface (high frequency signal output, 50 Ohm characteristic impedance) |
| 14 | GND | Input | Module Ground |
| 15 | GND | Input | Module Ground |
| 16 | GND | Input | Module Ground |
| 17 | GND | Input | Module Ground |
| 18 | GND | Input | Module Ground |
| 19 | GND | Input | Module Ground |
| 20 | STATE | Output | Module status indication output, if not used suspension processing is sufficient. |
| 21 | 485-EN | Input/output | The enable control pin of the external 485 chip can be used if it is not suspended for processing. |
| 22 | NC | - | No need to care, overhanging treatment. |
| 23 | NC | - | No need to care, overhanging treatment. |
| 24 | NC | - | No need to care, overhanging treatment. |
| 25 | SWDIO | - | No need to care, overhanging treatment. |
| 26 | SWCLK | - | No need to care, overhanging treatment. |
| 27 | GND | Input | Module Ground |
| 28 | 3.3V | - | No need to care, overhanging treatment. |
