E31-433T30S UART AX5243 chip wireless serial port module
[Chip solution]：AX5243
[Working frequency]：425~450.5MHz
[Transmit power]：30dBm
[Communication distance]：6km
[Interface type]： UART
[Product weight]：5.1±0.1g
[Introduction]：E31-433T30S is a 433M SMD wireless serial port module (UART) with AX5243 radio frequency chip imported from AXSEM from Switzerland. It has half-duplex, integrated transceiver and transparent transmission mode, 425~450.5MHz frequency band (default 433MHz), TTL level output , with air wake-up function (ultra-low power consumption).
Official Store| RF parameters | Parameter value | Remark |
| Working frequency | 425~450.5 MHz | Support ISM band |
| Transmit power | 30 dBm | About 1W |
| Receive sensitivity | -123 dBm | Airspeed 1.2kbps |
| Air speed | 1.2k~70kbps | User Programmed Control |
| Measured distance | 6km | Clear and open environment, maximum power, antenna gain 5dBi, height 2.5m, airspeed 1.2kbps |
| Hardware parameters | Parameter value | Remark |
| Size | 25 * 40.5 mm | _ |
| Antenna form | IPEX / stamp hole | Equivalent impedance is about 50 ohms |
| Communication Interface | UART serial port | Baud rate supports 1200~115200, factory default is 9600 |
| Packaging method | patch | _ |
| Electrical parameters | Minimum value | Typical value | Maximum value | Unit | Condition |
| voltage | 3.3 | 5 | 5.5 | V | - |
| Communication level | - | 3.3 | - | V | - |
| Emission current | 580 | 600 | 650 | mA | Instantaneous power consumption |
| receive current | - | 22 | - | mA | - |
| Sleep current | - | 2 | - | μA | Software shutdown |
| Operating temperature | -40 | 20 | 85 | ℃ | - |
| Working humidity | 10 | 60 | 90 | % | - |
| Storage temperature | -40 | 20 | 125 | ℃ | - |