In the case of unexpected power-off incidents the main controlling chip can write IK byte words into a memorizer called AT24C08 by I2C bus,thereforc the important parameters of the electric net period of time before the incident will be recorded.

• 通过I~2C总线主控芯片可将1K字节的数据写入AT24C08存储器中，在掉电的情况下仍能保存一段时间内电网的重要运行参数。