[Potencia de transmisión]：15W
[Distancia de comunicación]：30 km
[Tamaño del producto]：124*109,1*35,2mm
[peso]：425±5g
[Introducción]：E90-DTU (400SL42) es una radio de transmisión de datos inalámbrica de grado industrial de alta calidad real. La radio adopta la tecnología de espectro ensanchado LORA. Su fuerte capacidad antiinterferencias hace que la comunicación inalámbrica sea más estable y confiable en sitios industriales. Tiene una variedad de métodos de transmisión, funciona en la banda de frecuencia (410.125～493.125MHz) (433.125MHz por defecto), y la estación de radio proporciona una interfaz RS232/RS485 transparente. La tecnología de espectro ensanchado de secuencia directa LoRa traerá una distancia de comunicación más larga y tiene la ventaja de una fuerte capacidad anti-interferencia. El módulo tiene un algoritmo de corrección de errores de reenvío FEC de software, que tiene una alta eficiencia de codificación y una gran capacidad de corrección de errores, lo que mejora en gran medida la confiabilidad y la distancia de transmisión. La radio tiene la función de encriptación de datos; Admite la configuración de la longitud del paquete y admite diferentes paquetes de datos y en tiempo real.
Tienda oficial| Model Specifications | Working frequency (Hz) | Transmitting power (W) | Reference distance (km) | Specifications | Recommended Application Scenarios |
| E90-DTU(400SL42) | 433.125M | 15 | 30 | LoRa spread spectrum anti-jamming | Suitable for long-distance, interference-prone environments |
Note: Sunny weather, open environment without shelter, 12V/4A power supply, 5dBi suction cup antenna, the height of the antenna from the ground is 2 meters, and the factory default parameters are used.
| serial number | project | Specification | illustrate |
| 1 | Product Size | 124*109.1*35.2mm | See installation dimensions for details |
| 2 | product weight | 425g | Weight tolerance 5g |
| 3 | Operating temperature | -40℃～+85℃ | Meet the needs of industrial use |
| 4 | Antenna Impedance | 50Ω | Standard 50Ω characteristic impedance |
| 5 | voltage range | 12±1VDC | It is recommended to support instantaneous current 4A |
| 6 | Communication Interface | RS232/RS485 | Standard DB9 socket/5.08 terminal blocks |
| 7 | baud rate | Factory default 9600 | Baud rate range 1200～115200 |
| 8 | address code | Factory default 0 | A total of 65536 address codes can be set |
Frequency range and number of channels
| Model Specifications | Default frequency (Hz) | Frequency range (Hz) | Channel spacing (Hz) | number of channels |
| E90-DTU(400SL42) | 433.125M | 410.125～493.125M | 1M | 84, half duplex |
Note: In the same area, multiple sets of digital radios are used for one-to-one communication at the same time. It is recommended that each set of digital radios be set with a channel interval of more than 2MHz.
Transmit power level
| Model Specifications | 10/15W |
| E90-DTU(400SL42) | Software adjustable, default 15W |
Air Speed Class
| Model Specifications | Default air rate (bps) | number of grades | Air rate class (kbps) |
| E90-DTU(400SL42) | 2.4k | 8 | 0.3, 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 62.5 |
Note: The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, if the speed meets the requirements of use, it is recommended that the air speed be as low as possible.
Current parameter
| Model Specifications | Supply voltage (V) | Emission current (A) | Waiting current (mA) |
| E90-DTU(400SL42) | 12±1 | 2.5~3.5 | 45 |
Send and receive length and subpackage method
| Model Specifications | cache size | Subcontracting |
| E90-DTU(400SL42) | 1000 bytes | Subpackage 32/64/128/240 bytes can be sent by command setting |
Note: 1. If the single data received by the station is greater than the capacity of a single packet, the excess data will be automatically allocated to the second transmission until the