E77-900M22S UART interface LoraWan node module low power consumption support AT commands [Chip solution]: STM32WLE5CCU6 [Carrier frequency]:868~930MHz [Transmit power]: 22dBm [Communication distance]: 5600m [Product size]:14*20mm [Product weight]:1.6g±0.1g [Introduction]:E77-900M22S is a standard LoraWan node...