The answer to this question depends on the quality/speed of your Internet connection (above all in terms of upload, because the video is sent to the ioteo Cloud).
With a broadband Internet connection, we recommend that you do not exceed four cameras per Internet connection
• In HD mode with the sound enabled, the bandwidth used for upload is between 750 Kbps and 1 Mbps.
• In SD mode with the sound enabled, the bandwidth used for upload is around 350 Kbps.
If your Internet connection has a low bandwidth, you are advised to configure your camera in SD mode.
You can check the speed of your Internet connection using the following link: http://www.ioteo.com/speedtest/
Depending on the quality of your Internet connection, you can determine how many cameras you can install. It is strongly recommended that you do not work to the limits of your connection, but instead retain some bandwidth so that you can access the Internet.