Ebyte AX5243 UART 2km Low Frequency High Diffraction 433MHz 17dBm SMD 16*26mm LoRa Wireless Transmitter RF Module
[IC]：AX5243
[Frequency]：425~450.5MHz
[Power]：17dBm
[Distance]：2.0km
[Interface]：UART
[Weight]：1.9±0.1g
[Introduction]：E31-433T17S3 is a wireless transceiver module based on AX5243 from AXSEM(can be transmitter and receiver).The module uses FEC (forward error correction) algorithm,which greatly improve the anti-interference ability.
| RF Parameter | Value | Remark |
| Working frequency | 425~450.5 MHz | Support ISM band. |
| Transmitting power | 17 dBm | About 50mW |
| Receiving sensitivity | -117 dBm | Air data rate: 1.2kbps |
| Air data rate | 1.2k~70kbps | User programming control |
| Test distance | 2000米 | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 1.2kbps |
| Hardware Parameter | Value | Remark |
| Size | 16 * 26 mm | |
| Antenna type | IPEX / Stamp hole | The equivalent impedance is about 50Ω. |
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | SMD |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.0 | 5.0 | 5.5 | V | |
| Communication level | - | 3.3 | - | V | |
| Transmitting current | - | 87 | - | mA | Instant power consumption |
| Receiving current | - | 13 | - | mA | |
| Sleep current | - | 2 | - | μA | Software turn off |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |