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E22-400M22S SX1268 410/493MHz 22dBm SPI SMD LoRa Wireless Module
The E22 series is the first wireless module in China to adopt Semtech's SX1262, SX1268 RF chip. This chip provides a variety of modulation methods, such as LoRaTM and traditional GFSK. Its special LoRaTM modulation method increases the communication distance.
This module is configured via software for frequencies between 410~493 MHz. The correct antenna has to be used for the programmed frequency. Typical frequencies would be 433MHz in Europe(EU), and 470MHz, 486MHz and 487MHz(China).
These modules are designed and manufactured with quality in mind. High quality capacitors and German Wurth wire wound inductors are used. A temperature compensated crystal oscillator is used for timing, which is critical for low error long distance LoRa communication.
Features
- Communication distance tested is up to 7km
- Maximum transmission power of 160mW, software multi-level adjustable
- Support the global license-free ISM 433MHz/470MHz band
- Support air date rate of 0.018-62.5kbps in the LoRa TM mode
- Support 300kpbs in the FSK mode
- Compared with the transceiver of SX1278/SX1276
- With large capacity, FIFO supports 256Byte data cache
- New SF5 spreading factor to support dense networks
- Support 2.5V~3.7V power supply, more than 3.3V power supply can guarantee the best performance
- Industrial grade standard design, support -40 ~ 85 °C for working over a long time
- IPEX and stamp hole optional, good for secondary development and integration
Parameters
| RF Parameter | Value | Remark |
| Working frequency | 410~493 MHz | - |
| Transmitting power | 22 dBm | Max. Power (160mW) |
| Receiving sensitivity | -147 dBm | - |
| Air data rate | 0.018k~300kbps | - |
| Test distance | 6500m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m |
| Hardware Parameter | Value | Remark |
| Size | 14 * 20 mm | |
| Antenna type | IPEX / Stamp hole | |
| Communication interface | SPI | |
| Package | SMD | |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 1.8 | 3.3 | 3.6 | V | |
| Communication level | 1.8 | 3.3 | 3.6 | V | |
| Transmitting current | 95 | 100 | 105 | mA | 22dBm（160mW） |
| Receiving current | 6 | 6.5 | 7 | mA | |
| Sleep current | 1 | 2 | 3 | nA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
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