Features： Arduino Shield based on LA66 LoRaWAN module Supports LoRaWAN v1.0.4 protocol Supports peer-to-peer protocol TCXO crystal to ensure RF performance in low temperatures SMA connector Available in different LoRaWAN frequency bands World-wide unique OTAA keys Use AT Commands via UART-TTL interface Firmware upgradable via UART interface Ultra-long RF range
