[Working frequency]：410~450MHz
[Transmit power]：20dBm
[Communication distance]：3.5km
[Product size]： 26*16mm
[Product weight]：2.0±0.1g
[Introduction]：E48-433T20S is a domestic cost-effective wireless data transmission module launched by Chengdu Ebyte.It supports frequency hopping, automatic retransmission and other transmission methods, which can be applied to various IoT application scenarios. The wireless module works in the 410~450MHz frequency band, has TTL level output, supports a maximum transmit power of 20dBm, and is compatible with 3.3V IO port voltage. It supports functions such as air wake-up, wireless configuration, relay networking, communication keys, etc. At the same time, the module has a data encryption function. Through strict encryption and decryption algorithms, it ensures data security and improves communication reliability and transmission efficiency.
| RF parameters | unit | value | Remark |
| Working frequency | MHz | 410～450 | Support ISM band |
| Transmit power | dBm | 20±1 | Multi-level adjustable according to configuration parameters |
| blocking power | dBm | 0～10.0 | Less likely to be burned if used at close range |
| Receive sensitivity | dBm | -120±2 | Air rate 2.4kbps |
| Measured distance | km | 3.5km | Sunny and open, antenna gain 3.5dBi, antenna height 2.5 meters, air rate 2.4kbps |
| Air speed | kbps | 2.4～500 | Control based on configuration parameters |
| Electrical Parameter | Unit | Value | Remarks |
| Operating Voltage | V | 2.7V~5.5V | ＞3.3V Guaranteed output power |
| Communication level | V | 3.3 | Using 5V TTL has the risk of burning out |
| Emission current | mA | 95 | Instantaneous power consumption, @5V power supply |
| receive current | mA | 12 | @5V power supply |
| Sleep current | uA | 3.5 | Software shutdown |
| Operating temperature | ℃ | -40 ~ 85 | Industrial grade |
| Main parameters | value | Remark |
| Dimensions | 26*16mm | - |
| weight | 2.0g | ±0.1g |
| Launch length | 58 Byte | Subpackaging 58/116 bytes can be set through instructions to send |
| cache capacity | 1000 Byte | - |
| Modulation | GFSK | - |
| Communication Interface | UART serial port | TTL level |
| Packaging method | SMD type, stamp hole, pin spacing 1.27mm | - |
| Antenna interface | IPEX/stamp hole | - |
