[IC]：SX1278
[frecuencia]：410~525MHz
[poder]：10~20dBm
[distancia]：3.0km
[La interfaz]：UART
[peso]：2.1±0.1g
[Introducción]：E32-400T20S es un módulo de puerto serie inalámbrico desarrollado por EBAit para la industria de lectura de contadores inalámbricos. La solución LoRa spread Spectrum, con función de despertador de aire (bajo consumo de energía), banda de frecuencia de lectura del medidor por defecto de fábrica de 470MHz, modo de subcontratación largo (197 bytes por paquete), puede satisfacer la aplicación de la industria de la lectura de contadores.
| RF Parameter | Value | Remark |
| Working frequency | 410~525 MHz | Default: 470MHz |
| Transmitting power | 10~20 dBm | Default: 20dBm（About 100mW） |
| Receiving sensitivity | -146 dBm | Air data rate: 0.3kbps |
| Air data rate | 0.3k~19.2kbps | Default: 2.4kbps |
| Test distance | 3000 meter | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m, air data rate: 2.4kbps |
| Hardware Parameter | Value | Remark |
| Size | 16 * 26 mm | |
| Antenna type | IPX / Stamp hole | |
| Communication interface | UART | Baud rate: 1200~115200, default: 9600 |
| Package | SMD | |
| Buffer | 512 bytes buffer | Automatically sub-packaging with 197 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
| Power supply | 2.6 | 5.0 | 5.2 | V | |
| Communication level | 3.3 | V | |||
| Transmitting current | 96 | 106 | 116 | mA | 20dBm（100mW） |
| Receiving current | 14 | 15 | 16 | mA | |
| Sleep current | 3 | 4 | 5 | μA | |
| Operating temperature | -40 | 20 | +85 | ℃ | |
| Operating humidity | 10 | 60 | 90 | % | |
| Storage temperature | -40 | 20 | +125 | ℃ |