[Chip solution]：SX1268

[Transmission power]：22dBm

[Communication distance]：5km

[Product size]：45.3*27.8*11.2mm

[Introduction]：E22-400T22U is a new generation of LoRa wireless spread spectrum module, a wireless serial port module based on SEMTECH's SX1262 chip solution design. It has a variety of transmission methods, works at 410.125~493.125MHz (default 433.125MHz), LoRa spread spectrum technology, 5V IO port voltage, and adopts USB standard packaging, which is convenient for users to develop and use. The communication is compatible with E22-230T/400T/900T series products, and supports a baud rate of 1200~115200 bps. Support functions such as wireless configuration, carrier sense, automatic relay, communication key, firmware upgrade, etc., support packet length setting, and provide customized development services.