The optics are great, it's got infrared technology, and there's even a backup battery when the power goes out.

镜头很棒还有内置红外线技术而且还附带备用电池， 停电时也能运作。

It's not even connected to a light switch but it does have a backup battery and generator.

- 它甚至没有连接到电灯开关，但它确实有一个备用电池和发电机。