E90-DTU (400SL22) is a data transceiver using military-grade LoRa modulation technology. It has multiple transmission modes and operates in the 410.125~493.125MHz frequency band (default 433.125MHz).
The transceiver provides a transparent RS232/RS485 interface and supports 8~28V voltage input. LoRa direct sequence spread spectrum technology can bring a longer communication distance, and has the advantages of concentrated power density and strong anti-interference ability.
It uses software FEC forward error correction algorithm with high coding efficiency and strong error correction ability. In the case of burst interference, it can actively correct the interfered data packets, greatly improving reliability and transmission distance. In the absence of FEC, such data packets can only be discarded. It has data encryption function. The data transmitted by the transceiver in the air is random, and through strict encryption and decryption algorithms, data interception is meaningless. The data packet length can be set to support different real-time and data packet specifications.