[IC] : SX1278
[Frequency] : 410-525MHz
[Power] : 20dBm
[Distance] : 5.0km
[Interface] : SPI
[Weight] : 1.1±0.1g
[Introduction] : E19-433M20S2 is based on original imported RFIC SX1278 from SEMTECH, adopts LoRa spread spectrum technology. Which means the transmitting distance is much longer than before, besides the power density is more concentrated and anti-interference performance is better.
| RF Parameter | Value | Remark |
| Working frequency | 410~525 MHz | Default: 433MHz (32MHz oscillator) |
| Transmitting power | 20 dBm | Max. Power (100mW) |
| Receiving sensitivity | -147 dBm | Air data rate: 0.3kbps |
| Air data rate | 0.018k~37.5kbps | Default: 0.3kbps |
| Test distance | 5000m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 0.3kbps |
| Hardware Parameter | Value | Remark |
Size | 15 * 15 mm | |
Antenna type | Stamp hole | |
Communication interface | SPI | |
Package | SMD | |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.3 | 3.3 | 3.6 | V | |
| Communication level | - | 3.3 | - | V | |
| Transmitting current | - | 128 | - | mA | 20dBm（100mW） |
| Receiving current | - | 14 | - | mA | |
| Sleep current | - | 2.0 | - | μA | |
| Operating temperature | -40 | - | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
| Pin No | Pin item | SX1278 | Pin direction | Pin application |
| 1-4、11、12、19、20、22 | GND | GND | - | Ground electrode, connected to the power reference ground. |
| 5 | DIO0 | DIO0 | Input/Output | Configurable IO port（Please find more on SX1278 datasheet） |
| 6 | DIO1 | DIO1 | Input/Output | Configurable IO port（Please find more on SX1278 datasheet） |
| 7 | DIO2 | DIO2 | Input/Output | Configurable IO port（Please find more on SX1278 datasheet） |
| 8 | DIO3 | DIO3 | Input/Output | Configurable IO port（Please find more on SX1278 datasheet） |
| 9 | NC | DIO4 | - | Not connect |
| 10 | DIO5 | DIO5 | Input/Output | Configurable IO port（Please find more on SX1278 datasheet） |
| 13 | VCC | VBAT1，VBAT2，VBAT3 | - | Power supply: 1.8~3.6V (recommended 3.3V,Ceramic filter capacitor is advised to add) |
| 14 | SCK | SCK | Input | SPI clock input |
| 15 | MISO | MISO | Output | SPI clock input |
| 16 | MOSI | MOSI | Input | SPI clock input |
| 17 | NSS | NSS | Input | Chip select, start SPI communication, low level enable |
| 18 | RST | NRESET | Input | Reset, low level enable |
| 21 | ANT | 无 | - | Antenna |
| Order online |
| 【eBay】：https://www.ebay.com/usr/cdebyte |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 【Alibaba】：https://www.alibaba.com |
| For batch order/customized product |
| 【Sales hotline】：+86-28-61399028 Ext.812 |
| 【E-mail】：service@cdebyte.com |
| Technical support |
| 【Submit online】：http://www.ebyte.com/en/apple-technology.aspx |
| 【E-mail】：support@cdebyte.com |
| Model | IC | Interface | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | Manual | Sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E19-900M20S2 | SPI | SX1276 | 868M/915M | 20 | 5 | 0.018~37.5k | SMD | 15 * 15 | LoRa spread spectrum,super mini size | ||
| E19-433M20S2 | SPI | SX1278 | 433M | 20 | 5 | 0.018~37.5k | SMD | 15 * 15 | LoRa spread spectrum | ||
| E19-868M30S | SPI | SX1276 | 868M | 30 | 10.0 | 0.018~37.5k | SMD | 25*40 | Lora spread-spectrum | ||
| E19-915M30S | SPI | SX1276 | 915M | 30 | 10.0 | 0.018~37.5k | SMD | 25*40 | Lora spread-spectrum | ||
| E19-433M30S | SPI | SX1278 | 433M/470M | 30 | 10.0 | 0.018~37.5k | SMD | 25*37 | Lora spread-spectrum | ||
| E19-433M20SC | SPI | SX1278 | 433M | 20 | 5.0 | 0.018~37.5k | SMD | 17.6*25.2 | Lora spread-spectrum | ||
| E19-868M20S | SPI | SX1276 | 868M | 20 | 5.0 | 0.018~37.5k | SMD | 17.6*25.2 | Lora spread-spectrum | ||
| E19-915M20S | SPI | SX1276 | 915M | 20 | 5.0 | 0.018~37.5k | SMD | 17.6*25.2 | Lora spread-spectrum |
