E90-DTU(900SL42)LoRa data transmission radio LoRa module remote communication SX1262 radio frequency chip 485/232 wireless data transmission radio relay network
[Transmitting power]：15W
[Communication distance]：30km
[Product weight]： 425±5g
[Introduction]：E90-DTU(900SL42) is a truly high-quality industrial-grade wireless data transmission radio. The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity, and Anti-Salt Spray.The radio station provides a transparent RS232/RS485 interface. LoRa direct sequence spread spectrum technology will bring longer communication distance and has the advantage of strong anti-interference ability.
| Pin number | Name | Function | Description |
| 1 | GND | Pressed wire power input negative pole | Power reference ground |
| 2 | VCC | Pressed line power input positive pole | Power input (12V/4A) |
| 3 | MOD | Mode control | Floating, normal mode; grounded, configuration mode |
| 4 | RS485 G | RS485 interface G | RS485 interface G is connected to the GND interface of the device (recommended connection) |
| 5 | RS485 B | RS485 interface B | RS485 interface B is connected to device B interface |
| 6 | RS485 A | RS485 interface A | RS485 interface A is connected to device A interface |
| 7 | RS232 | RS232 interface | Standard RS232 interface |
| 8 | ANT | SMA-K interface | Externally threaded inner hole, length 10mm, characteristic impedance 50Ω |
| 9 | UPDATE | - | Hidden buttons, users don’t need to care |
| 10 | PWR | Power Indicator | Red, lights up when power is on |
| 11 | TXD | Serial data sending indicator light | Yellow, flashing when sending data |
| 12 | RXD | Serial port data receiving indicator light | Yellow, flashes when receiving data |
| 13 | ERR | warning light | The antenna is not connected or the voltage or temperature is abnormal. After the abnormality of the unconnected antenna is resolved, it needs to be powered on again to work normally. |