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E77-400M22S LoRaWan node module UART interface AT command configuration Support LoRaWAN 1.0.3 EU433/CN470 [Chip solution]: STM32WLE5CCU6 [Carrier frequency]:410~510 MHz [Transmit power]: 22dBm [Communication distance]: 5600m [Product size]: 14*20mm [Product weight]:1.6g±0.1g [Introduction]:E77-400M22S is a...