技术规格
| 参数项 | Parameter | Specifications |
|---|---|---|
| 硬件 | Module | LoRa module, GPS module, WIFI / BLE module |
| 硬件 | Sensor | Temperature Sensor |
| 硬件 | Kernel | STM32476X |
| 硬件 | Clock | 12MHz |
| 硬件 | Size (mm) | 167*67*27 |
| 硬件 | Interface | Mini USB |
| 硬件 | Power supply | Rechargeable built-in lithium battery |
| 硬件 | Storage | SD memory card |
| 硬件 | Standby Current (Interview Screen) | 21.8 mA |
| 硬件 | Shutdown Leakage Current | 36 uA |
| 硬件 | Transmit Power | 20dBm max@434MHz/470MHz 20dBm max @868MHz/915MHz |
| 硬件 | Receiving Sensitivity | -139dBm @SF12, BW125kHz, 434MHz/470MHz -137dBm @SF12, BW125kHz, 868MHz/915MHz |
| 硬件 | TTFF（Open Area） | 30 s |
| 硬件 | ESD | Contact discharge Air discharge ±4KV |
| #15 | System | RT Thread |
| 软件 | Firmware upgrade | USB upgrade |
| 软件 | SD Card File System | FAT32 |