Features : 

MCU：ASR6502 (48 MHz ARM® Cortex® M0+ MCU, 128KB FLASH, 16KB SRAM )

LoRa Chip：ASR6502 (Internal assembled Semtech® LoRa® Transceiver SX1262) LoRa working band: EU_433, CN_470_510, EU_863_870, US_902_928

LoRa maximum output power: 21dB ± 1dB

Hardware resources: UART x 2; SPI x 2; I2C x 2; SWD x 1;ADC x 3; COMP x 1;12 – bits ADC; 8 – channel DMA engine;14 x GPIO

FLASH: 128KB internal FLASH

Interface: 1.27X(12X2 +11) stamp edge; LoRa Antenna (IPEX) x 1

Size: 20.32 x 20.32 x 2 mm

Low power design: Deep Sleep 3.5uA