Battery Size Reference
Specifications
| MCU | ESP32 |
| Flash | 4MB |
| PSRAM | 8MB |
| Driver | CH9102 |
| Wireless protocol | Wi-Fi + Bluetooth 4.2 |
| PMU | AXP2101 |
| Onboard functions | 3 Buttons (Power+IO38+Reset) |
| Power Supply Mode | Support USB / 18650 battery |
| NEO-6M GPS Modules | Support GPS protocol Onboard RTC crystal, Support interrupt/wakeup |
| Â Long Range Low Power LoRa Transceiver:Â |
| High sensitivity | -148 dBm |
| Transceive rate | 300 kbps |
| LoRa Chip Name | SX1276 |
Sample Code For Reference [Github]
If you need technical support please check below link to find more details.
Pin Diagram
 More Details
915MHz
868MHz
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