[Frecuencia]：410~441MHz
[Energía]：20dBm
[Distancia]：3.0km
[Interfaz]：RS232/RS485
[Peso]：130±5g
[Introducción]：E90-DTU es un transceptor de datos inalámbrico con la función de procesamiento de datos digitales, modulación y demodulación digital, FEC, decisión suave equilibrada, etc. Proporciona una interfaz RS232/RS485 transparente, diferente con el transceptor FM analógico más el transceptor digital analógico MODEM.
| RF Parameter | Value | Remark |
|---|---|---|
| Working frequency | 410~441 MHz | Default: 433MHz |
| Transmitting power | 20 dBm | About 100mW |
| Air data rate | 2.4k~19.2kbps | Default: 2.4kbps |
| Test distance | 3000 meters | In open and clear air, with maximum power, 5dBi antenna gain, height of 2m,air data rate: 2.4kbps |
| Hardware Parameter | Value | Remark |
|---|---|---|
| Size | 82 * 62 * 25 mm | Without SMA-K |
| Antenna type | SMA-K | - |
| Communication interface | RS232 / RS485 | Standard DB9 Hole / 3.81 connecting terminal |
| Baud rate | 9600 | Baud rate: 1200~115200 |
| Buffer | 512 bytes buffer | Automatically sub-packaging with 197 bytes per package |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|
| Power supply | 8 | 12 | 28 | V | - |
| Transmitting current | 330 | 367 | 403 | mA | 20dBm（100mW） |
| Stand-by current | 19 | 21 | 23 | mA | - |
| Operating temperature | -40 | 20 | +85 | ℃ | - |
| Operating humidity | 10 | 60 | 90 | % | - |
| Storage temperature | -40 | 20 | +125 | ℃ | - |