Q: I do not quite understand how the push service works. Do I need an internet connection?
A: Yes, the smart phone must be connected to the internet.
You will receive a push message as soon as the camera has triggered an alarm and you have activated Push. A push message will be sent to you by Google, Apple, etc. depending on your smart phone. First, the camera sends the information about an alarm to our server which has linked your smart phone. Then this server sends the info to the server of the respective platform of your smart phone and this sends you the message to your smart phone ... (see also "how does push" on Google ...)