E90-DTU(400SL42) Communication à distance radio numérique LoRa, station de transmission de données sans fil SX1268, réseau de relais RS485/RS232
[Puissance d'émission]：15W
[Distance de communication]：30 km
[Taille du produit]：124*109.1*35.2mm
[Poids du produit]：425±5g
[Introduction]：E90-DTU (400SL42) est une véritable radio de transmission de données sans fil de qualité industrielle de haute qualité. La radio adopte la technologie à spectre étalé LORA. Sa forte capacité anti-interférence rend la communication sans fil plus stable et fiable dans les sites industriels. Il a une variété de méthodes de transmission, fonctionne dans la bande de fréquence (410.125～493.125MHz) (par défaut 433.125MHz), et la station de radio fournit une interface RS232/RS485 transparente. La technologie de spectre étalé à séquence directe LoRa apportera une distance de communication plus longue et a l'avantage d'une forte capacité anti-interférence. Le module dispose d'un algorithme logiciel de correction d'erreur directe FEC, qui a une efficacité de codage élevée et une forte capacité de correction d'erreur, améliorant considérablement la fiabilité et la distance de transmission. La radio a la fonction de cryptage des données ; il prend en charge le réglage de la longueur des paquets et prend en charge différents paquets de données et en temps réel.
Magasin officiel| 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 transmission is completed;