[Frequency]：850.125~930.125MHz
[Power]：30dBm
[Distance]：10km
[Size]：24*43mm
[Introduction]：E220-900T30D adopts a new generation of LoRa spread spectrum technology and a wireless serial port module (UART) designed based on the LLCC68 chip scheme. It has a variety of transmission methods, works in the (850.125 ～930.125MHz) frequency band (default 873.125MHz), TTL level output, compatible with 3.3V and 5V IO port voltage.