[Communication interface]：RS485

[Frequency]：410.125～493.125MHz

[Transmitting power]：30dBm

[Communication distance]：10km

[Size]： 26*48mm

[Product weight]：8.9±0.1g

[Introduction]：EWM22A-400R30D is a new generation of LoRa wireless data transmission module. This series of wireless modules is an RS485 interface module developed based on SEMTECH high-performance RF chips. It has multiple transmission modes, works in the (410.125~493.125MHz) frequency band (default 433.125MHz), supports DC5V power supply, and can be used with the E22-T series of the same frequency band for low-power applications. The LoRa module uses a new generation of LoRa spread spectrum technology, which is faster, has lower power consumption, and is smaller in size; it supports air wake-up, wireless configuration, carrier monitoring, automatic relay, communication key and other functions, supports sub-packet length setting, and can provide customized development services.