[IC]:SI4438
[Frequency]:475~500.5MHz
[Power]:10~20dBm
[Distance]:2.5km
[Interface]:UART
[Weight]:2.3±0.1g
[Introduction]:E30-490T20S is a SMD UART rf module with transparent transmission,operates at 475-500.5MHz,TTL level,WOR(Ultra-low power consumption).The module features FEC(Forward Error Correction)algorithm,which ensure its high coding efficiency & good correction performance.
| RF Parameter | Value | Remark |
| Working frequency | 475~500.5 MHz | Default: 490MHz |
| Transmitting power | 10~20 dBm | Default: 20dBm（About 100mW） |
| Receiving sensitivity | -121 dBm | Air data rate: 5kbps |
| Air data rate | 1k~25kbps | Default: 5kbps |
| Test distance | 2500m | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 2.4kbps |
| Hardware Parameter | Value | Remark |
Size | 17 * 30 mm | |
Antenna type | IPEX/external/spring | |
Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
Package | SMD | |
Buffer | 512 bytes buffer | Automatically sub-packaging with 58 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.3 | 5.0 | 5.2 | V | |
| Communication level | 2.5 | 3.3 | 3.6 | V | |
| Transmitting current | 82 | 89 | 98 | mA | 20dBm（100mW） |
| Receiving current | 15 | 16 | 17 | mA | |
| Sleep current | 3 | 4 | 5 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |
| Pin No. | Pin Item | Pin Direction | Pin Application |
| 1 | M0 | Input （weak pull-up） | Work with M1 & decide the four operating modes. (Floating is not allowed, can be ground) |
| 2 | M1 | Input （weak pull-up） | Work with M0 & decide the four operating modes. (Floating is not allowed, can be ground) |
| 3 | RXD | Input | TTL UART inputs, connects to external (MCU, PC) TXD output pin. Can be configured as open-drain or pull-up input. |
| 4 | TXD | Output | TTL UART outputs, connects to external RXD (MCU,PC) input pin. Can be configured as open-drain or push-pull output |
| 5 | AUX | Output | To indicate module's working status & wakes up the external MCU. During the procedure of self-check initialization, the pin outputs low level. Can be configured as open-drain output or push-pull output. (Floating is allowed) |
| 6 | VCC | Input | Power supply 2.3V~5.5V DC |
| 7 | GND | Input | Ground electrode |
| 8 | ANT | Output | Antenna interface（ high frequency signal output） |
| 9 | GND | Output | Reference places of high frequency signal output |
| 10 | GND | Input | Ground electrode |
| 11 | GND | Input | Ground electrode |
| Order online |
| 【Aliexpress】：https://www.aliexpress.com/store/2798183 |
| 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 |
| 产品 型号 | Interface | IC | Frequency Hz | Power dBm | Distance km | Air data rate | Package | Size (mm) | Feature | 技术 手册 | 样品 购买 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| E30-400M30S（4463） | SPI | SI4463 | 433M 470M | 30 | 5.6 | 1k~25k | SMD | 38.5*24 | Long distance communication | ||
| E30-400M30S（4438） | SPI | SI4438 | 433M 470M | 30 | 5.6 | 1k~25k | SMD | 38.5*24 | Long communicaiton distance | ||
| E30-900MBL-01 | USB | - | - | - | - | - | - | 53*27mm | E30 series module test board | ||
| E30-400MBL-01 | USB | - | - | - | - | - | - | 53*27mm | E30 series module test board | ||
| E30-400M20S（4463） | SPI | SI4463 | 433M 470M | 20 | 2.5 | 1k~25k | SMD | 20*14 | Long transmission distance,Strong penetration diffraction | ||
| E30-900M30S | SPI | SI4463 | 868M 915M | 30 | 5.6 | 1k~25k | SMD | 38.5*24 | Long transmission distance,Strong penetration diffraction | ||
| E30-900M20S | SPI | SI4463 | 868M 915M | 20 | 2.5 | 1k~25k | SMD | 20*14 | Strong penetration diffraction,Strong penetration diffraction | ||
| E30-400M20S（4438） | SPI | SI4438 | 433M 470M | 20 | 2.5 | 1k~25k | SMD | 20*14 | Long transmission distance,Strong penetration diffraction | ||
| E30-433T20S3 | UART | SI4438 | 433M | 20 | 2.5 | 1k~25k | SMD | 16*26 | FEC , WOR | ||
| E30-DTU(433M37) | 232/485 | SI4438 | 433M | 37 | 15 | 1k~25k | Screwing/DB9 | 124*105*25 | FEC , WOR | ||
| E30-DTU-490M20 | 232/485 | SI4438 | 490M | 20 | 2.5 | 1k~25k | Screwing/DB9 | 82*62*25 | FEC , WOR | ||
| E30-170T20D | UART | SI4463 | 170M | 20 | 2.0 | 1k~25k | DIP | 21*36 | Diffraction , FEC | ||
| E30-170T27D | UART | SI4463 | 170M | 27 | 5.0 | 1k~25k | DIP | 24*43 | Diffraction , FEC | ||
| E30-780T20S | UART | SI4463 | 780M | 20 | 2.5 | 1k~25k | SMD | 17*30 | FEC , WOR | ||
| E30-868T20S | UART | SI4463 | 868M | 20 | 2.5 | 1k~25k | SMD | 17*30 | FEC , WOR | ||
| E30-868T20D | UART | SI4463 | 868M | 20 | 2.5 | 1k~25k | DIP | 21*36 | FEC , WOR | ||
| E30-915T20D | UART | SI4463 | 915M | 20 | 2.5 | 1k~25k | DIP | 21*36 | FEC , WOR | ||
| E30-490T20D | UART | SI4438 | 490M | 20 | 2.5 | 1k~25k | DIP | 21*36 | FEC , WOR | ||
| E30-433T20S | UART | SI4438 | 433M | 20 | 2.0 | 1k~25k | SMD | 17*30 | FEC , WOR | ||
| E30-433T20D | UART | SI4438 | 433M | 20 | 2.0 | 1k~25k | DIP | 21*36 | FEC , WOR | ||
| E30-915T20S | UART | SI4463 | 915M | 20 | 2.5 | 1k~25k | SMD | 17*30 | FEC , WOR | ||
| E30-490T20S | UART | SI4438 | 490M | 20 | 2.5 | 1k~25k | SMD | 17*30 | FEC , WOR |
