[Communication Interface]：RS485

[Frequency]：410.125-493.125 MHz

[Transmitting power]：22dBm

[Communication distance]： 5km

[Size]：38*23mm

[Product weight]：7.1g±0.1g

[Introduction]：EWM22A-400R22D 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.