这句话请帮忙翻译成中文? The camera work but the "motion detection" not

这句话请帮忙翻译成中文? The camera work but the "motion detection" not . So ican'...
这句话请帮忙翻译成中文?
The camera work but the "motion detection" not .
So ican't use it to monitor for thief .
I tried it several times. The still photograp work, also the video work, but the "motion detect" not.
The clock function is ok.