Hidden Camera In Trainin Bangalore What Materials Do I Need To Installed A Smoke Detector Hidden Camera?

What materials do I need to installed a smoke detector hidden camera? - hidden camera in trainin bangalore

I have a baby of 2 months and I'll take a look after his nanny while I was in school. I searched online and found the smoke detector hidden camera, but what should I buy to buy the hidden camera, or anything that comes in the kit?