Technical Parameters
| Source | Parameter | |
| 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 | 22 ± 1dB | |
| Hardware resources | UART x 2; SPI x 1; I2C x 1; SWD x 1; ADCx 3; COMP x 1 | |
| 12 – bits ADC; 8 – channel DMA engine | ||
| 14 x GPIO | ||
| FLASH | 128KB internal FLASH | |
| Interface | Micro USB x 1; LoRa (IPEX) x 1 | |
| Size | 55.9 x 27.9 x 9.5 mm | |
| USB-UART bridge | CP2102 | |
| Battery Type | 3.7V Lithium (SH1.25 x 2 socket) | |
| Battery detection circuit | √ | |
| External device power control（Vext） | √ | |
| Low power design | Deep Sleep 50uA | |
Electrical characteristics
| Electrical characteristics | condition | Minimum | Typical | Maximum |
| Power Supply | USB powered (≥500mA) | 4.7V | 5V | 6V |
| Lithium powered（≥250mA） | 3.3V | 3.7V | 4.2V | |
| 3.3V（pin）powered（≥150mA） | 2.7V | 3.3V | 3.5V | |
| 5V（pin）powered（≥500mA） | 4.7V | 5V | 6V | |
| Power consumption(mA) | LoRa Rx Mode | 10mA | ||
| LoRa 10dBm output | 70mA | |||
| LoRa 14dBm output | 90mA | |||
| LoRa 17dBm output | 100mA | |||
| LoRa 20dBm output | 105mA | |||
| Sleep Mode (USB powered) | 9.6mA | |||
| Sleep Mode (VBAT/battery powered) | 56uA | |||
| Sleep Mode (3.3V header powered) | 50uA | |||
| Output | 3.3V pin output | 500mA | ||
| 5V pin output （USB powered only） | Equal to the input current | |||
| External device power control (Vext 3.3V） | 350mA |