I have set up the internal functions but it doesn't call me on the phone. Can someone help? I have connected the cable to the Line position of the alarm and then to the Phone position of the router, but also directly to the telephone line.

It is a very satisfactory and reliable alarm, especially considering its attractive price and the multitude of functions it offers.
I gave it four stars only because it did not have Greek instructions for use.

Very easy to program and use. It can be easily programmed by my ten-year-old son. Elderly people have some difficulty with programming, but they can use the keychain comfortably. Very good price for an alarm that starts as a base and then you can expand it as you wish, making great savings. The only drawback we find is that it does not adjust the volume of the voice of the built-in computer, but it is not annoying. Its most basic usefulness for us is that it notifies you on your mobile phone with a simple phone call, whether it's for theft, fire, or leaks.