E90-DTU (900SL42) is a real high-quality industrial-grade wireless data transmission unit (the unit has won the national appearance design patent ZL202030009845.3),it adopts LORA spread spectrum technology,with strong anti-interference ability, it allows wireless communication more stable and reliable. The radio provides a transparent RS232/RS485 interface. LoRa direct-sequence spread spectrum technology brings a longer communication distance and has the advantage of strong anti-interference ability.
As a communication medium, wireless data transmission radio has a certain scope of application like optical fiber, microwave, and wire: it provides monitoring real-time and reliable data transmission of signals in private networks under certain special conditions, with the advantages of low cost, easy installation and maintenance, strong diffraction ability, flexible network structure, and long coverage. It is suitable for occasions with multiple points but scattered locations, and complex geographical environments. It can be connected with data terminals such as PLC, RTU, rain gauge, and liquid level gauge