[IC] : SX1276
[Frequency] : 862~931MHz
[Power] : 20dBm
[Distance] : 5km
[Size] : 15*15mm
[Antenna] : Stamp hole
[Introduction] : E19-900M20S2 is an ultra-small 915MHz SMD LoRaTM wireless module independently developed based on the SX1276 produced by Semtech in the United States. It uses an industrial-grade high-precision 32MHz crystal oscillator.
| The main parameters | Value | Remark |
| Working frequency | 862~931 MHz | Support ISM frequency band |
| Max TX power | 20 dBm | - |
| Receiving sensitivity | -147 dBm | The sensitivity test condition is airspeed 0.3kbps,coding rate 4/5,spreading factor 12 |
| Air data rate | 0.018k~37.5kbps(LoRa) 1.2k~300kbps(GFSK) | User programmable customization |
| Reference distance | 5000米 | Clear and open, antenna gain 5dBi, antenna height 2.5 meters,air rate 1kbps |
| The main parameters | Value | Remark |
| Dimensions | 15 * 15 mm | |
| Antenna interface | Stamp hole | Equivalent impedance is about 50Ω |
| Communication Interface | SPI | 0-10Mbps |
| Packaging method | SMD | |
| The main parameters | Min. | Typical | Max. | Unit | Remark |
| Working voltage | 2.3 | 3.3 | 3.6 | V | ≥3.3V can guarantee output power |
| Communication level | - | 3.3 | - | V | Using 5V TTL is risky to burn |
| Emission current | - | 135 | - | mA | Instantaneous power consumption |
| Receiving current | - | 12.6 | - | mA | - |
| Sleep current | - | 2.0 | - | μA | Software shutdow |
| Working temperature | -40 | 20 | +85 | ℃ | - |
| Pin No. | Item | Direction | Description |
| 1 | GND | - | Ground wire, connected to the power reference ground |
| 2 | GND | - | Ground wire, connected to the power reference ground |
| 3 | GND | - | Ground wire, connected to the power reference ground |
| 4 | GND | - | Ground wire, connected to the power reference ground |
| 5 | DIO0 | Input/Output | Configurable general IO port (see SX1276 manual for details) |
| 6 | DIO1 | Input/Output | Configurable general IO port (see SX1276 manual for details) |
| 7 | DIO2 | Input/Output | Configurable general IO port (see SX1276 manual for details) |
| 8 | DIO3 | Input/Output | Configurable general IO port (see SX1276 manual for details) |
| 9 | NC | - | Internal use of the module (this pin cannot be connected to any electrical network in the circuit design) |
| 10 | DIO5 | Input/Output | Configurable general IO port (see SX1276 manual for details) |
| 11 | GND | - | Ground wire, connected to the power reference ground |
| 12 | GND | - | Ground wire, connected to the power reference ground |
| 13 | VCC | - | Power supply, range 2.3～3.6V (recommended 3.3V, recommended to add ceramic filter capacitor) |
| 14 | SCK | Input | SSPI clock input pin |
| 15 | MISO | Output | SPI data output pin |
| 16 | MOSI | Input | SPI data input pin |
| 17 | NSS | Input | Module chip select pin, used to start a SPI communication, active low |
| 18 | RST | Input | Chip reset trigger input pin, active low |
| 19 | GND | - | Ground wire, connected to the power reference ground |
| 20 | GND | - | Ground wire, connected to the power reference ground |
| 21 | ANT | - | antenna |
| 22 | GND | - | Ground wire, connected to the power reference ground |
| Order online |
| 【eBay】：https://www.ebay.com |
| 【Aliexpress】：https://www.aliexpress.com |
| 【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 |
