[Chip solution]：LLCC68

[Frequency]：410.125~493.125MHz

[Transmitter power]：22dBm

[Communication diatance]：5km

[Size]：16*26mm

[Product weight]：2.2g±0.1g

[Introduction]：E220-400T22S is a new generation of LoRa wireless serial port module (UART), based on Semtech's original LLCC68 chip design. It has a variety of transmission methods, works in the (410.125～493.125MHz) frequency band (default 433.125MHz), LoRa spread spectrum technology, TTL level output, compatible with 3.3V and 5V IO port voltage