The Ebyte E48-433T20S is an industrial 433MHz wireless UART transceiver module operating from 410MHz to 450MHz, delivering 20dBm output power, 3.5km transmission distance, automatic frequency hopping, and automatic retransmission over TTL serial interface with 3.5uA low sleep power.
| Technical Parameter | E48-433T20S Specification | Remarks / Conditions |
|---|---|---|
| Working Frequency | 410 to 450 MHz | Supports ISM Band |
| Transmitting Power | 20 +/- 1 dBm | Multi-level adjustable via software |
| Receiving Sensitivity | -120 +/- 2 dBm | Air rate at 2.4 kbps |
| Communication Distance | 3.5 km | Sunny, open ground, 3.5dBi antenna, 2.5m height |
| Air Data Rate | 2.4 to 500 kbps | 8 levels configurable |
| Operating Voltage & Level | 2.7 to 5.5 V DC (3.3V Logic) | GreaterThan 3.3V recommended for max 20dBm power |
| Current Consumption | TX: 95 mA, RX: 12 mA, Sleep: 3.5 uA | Measured at 5V DC power supply |
| Modulation & Features | GFSK, Auto Frequency Hopping, Auto Retransmission | Air wake-up, Encryption key, LBT, Relay networking |
| Dimensions & Package | 26 x 16 mm, Weight: 2.0 +/- 0.1 g | SMD Stamp hole, IPEX / Stamp hole antenna pin |
| 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 | - |
