Synch module is necessary and was included with my initial order of the indoor camera. Connect the Synch module to the router and connect the camera with the QR code or instructions. Everything works perfectly

Hello

I am returning it because it is sold without a module and without a module it does not work.

Hello Fabian
first you need the set, it comes with one camera Blink WLAN IP-Surveillance Camera Set (1280 x 720 Pixels)
then you can install several cameras, I have 5 cameras in use and thanks to the set, the pictures/videos are saved in the cloud and if needed you can download them and save them on your PC. It is really a very good thing and in my opinion also a cheap surveillance with excellent quality without direct power connection.