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E90-DTU(900SL42)LoRa data transmission radio LoRa module remote communication SX1262 radio frequency chip 485/232 wireless data transmission radio relay network

[Introduction]:E90-DTU(900SL42) is a truly high-quality industrial-grade wireless data transmission radio. The radio uses LORA spread spectrum technology. Its strong anti-interference ability makes wireless communications more stable and reliable in industrial sites. It has a variety of transmission methods and works in the (850.125~930.125MHz) frequency band (default 868MHz). 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. The module has a software FEC forward error correction algorithm, which has high coding efficiency and strong error correction capability, which greatly improves reliability and transmission distance. The radio has data encryption function; supports sub-packet length setting, supports different real-time and data packets.

PIN
Pin number Name Function Description
1GNDPressed wire power input negative polePower reference ground
2VCCPressed line power input positive polePower input (12V/4A)
3MODMode controlFloating, normal mode; grounded, configuration mode
4RS485 GRS485 interface GRS485 interface G is connected to the GND interface of the device (recommended connection)
5RS485 BRS485 interface BRS485 interface B is connected to device B interface
6RS485 ARS485 interface ARS485 interface A is connected to device A interface
7RS232RS232 interfaceStandard RS232 interface
8ANTSMA-K interfaceExternally threaded inner hole, length 10mm, characteristic impedance 50Ω
9UPDATE-Hidden buttons, users don’t need to care
10PWRPower IndicatorRed, lights up when power is on
11TXDSerial data sending indicator lightYellow, flashing when sending data
12RXDSerial port data receiving indicator lightYellow, flashes when receiving data
13ERRwarning lightThe 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.