[Chip solution]：LoRa solution

[Frequency]：850.125 ~ 930.125MHz

[Transmitting power]：22dBm

[Communication distance]： 5km

[Size]：14*20mm

[Product weight]：5g

[Introduction]：EWM220M-900T22S wireless transparent transmission module is a new generation of LoRa wireless serial port module (UART). It has multiple transmission modes, works in the 850.125~930.125MHz frequency band (default 868/915MHz), LoRa spread spectrum technology, TTL level output, and is compatible with 3.3V and 5V IO port voltages. The LoRa module has long transmission distance, fast speed, low power consumption, small size, and high cost performance; it supports air wake-up, carrier monitoring, communication key and other functions, supports sub-packet length setting, and can provide customized development services.