[Type d'interface]：RS485/RS232/TTL
[Fréquence porteuse]： 410,125 ~ 493,125 MHz
[Puissance de transmission]：22 dBm
[Distance de communication]：5 km
[Taille du produit]：80*28*28.5mm
[Poids du produit]：31.3±2g
[Introduction]：E95M-DTU (400SL22-xxx) est une radio de transmission de données sans fil utilisant la technologie de modulation LoRa de qualité militaire. Elle dispose de diverses méthodes de transmission et fonctionne dans la bande de fréquence (410,125 MHz ~ 493,125 MHz) (433,125 MHz par défaut). fournit une interface transparente RS485/RS232/TTL, adopte une coque en plastique, une structure montée sur rail, prend en charge une entrée de tension large de 8 ~ 28 V (DC). La technologie LoRa à spectre étalé apportera une distance de communication plus longue et présente l'avantage d'une forte capacité anti-interférence.
Magasin officielGeneral specifications and parameters
| No. | Item | Specifications | Description |
| 1 | product size | 80*28*27 mm | See installation size for details |
| 2 | Product weight | 32 g | Weight tolerance of 2g |
| 3 | working temperature | -40°C 〜+85℃ | technical grade |
| 4 | voltage range | 8〜28V (DC ) | 12V or 24V |
| 5 | communication interface | RS485/RS232/TTL | RS485, RS232, TTL three choose one, subject to the physical identification of the product |
| 6 | Baud rate | Factor}- default: 9600 | The Baud rate range is from 1200 to 115200 |
| 7 | address code | Factory default 0 | A total of 65,536 address codes can be set |
Frequency range and channel number
| Model | Frequency | Transmitting power | Reference distance | Specification |
| MHz | dBm | km | ||
| E95M -DTU(400SLxx -XXX ) | 433.125M | 410.125 〜493.125M | 1M | 84, Half duplex |
★ Note: In the same area, use multiple sets of transmission stations to communicate one to one at the same time. It is suggested that the channel interval be set above 2 MHz.
Transmitting power level
| Model | 22dBm/30dBm | 17dBm/27dBm | 13dBm / 24dBm | 10dBm/21dBm |
| E95M -DTU(400SLxx -XXX ) | Factory default | √ | √ | √ |
★ Note: The lower the transmission power is. the closer the transmission distance is, but the working current will not decrease in the same proportion, so it is recommended to use the maximum transmission power
Air rate rating
| Model | Default air rate | Equal series | Air rate grade |
| bps | k bps | ||
| E95M -DTU(400SLxx-xxx ) | 2.4k | 6 | 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 closer the transmission distance; so if the rate meets the usage requirements, the lower the air speed, the better.
Current parameters
| Model | Emission current mA | Waiting current mA | ||
| 12V | 24V | 12V | 24V | |
| E95M -DTU(400SL 22-xxx) | 45 | 26 | 10 | 7 |
| E95M -DTU(400SL 30-xxx) | 250 | 125 | 9 | 5 |
★ Note: It is recommended to retain more than 50% of the current margin when selecting the power supply,which is conducive to the long-term and stable operation of the radio station.
Length of receiving and receiving and the subcontracting method
| ts | Cache size | Subcontracting method |
| E95M -DTU(400SLxx -XXX ) | 1000 Bytes | Can be sent by instruction subcontracting 32 / 64 / 128 / 240 bytes |
★ pay attention to:
If the single received data of the radio station is greater than the single package capacity, the excess data will be automatically allocated to the second transmission until the transmission is completed;
Single single received data cannot be greater than the cache capacity