电池扣（RTC）
From ESS-WIKI
RTC Battery Connector (BAT)
RSB-4710 supports a lithium 3V, 210mAH CR2032 battery with wafer box.
| Pin |
Description |
| 1 | COIN_RTC |
| 2 | GND |
插一张1-RTC接口的图片
RSB-4710 supports a lithium 3V, 210mAH CR2032 battery with wafer box.
| Pin |
Description |
| 1 | COIN_RTC |
| 2 | GND |
插一张1-RTC接口的图片