In some distant points, the traps at the windows, if you have walls in front, do not connect, and less than 30 meters, I have installed the Powertech PT-1287 siren and I have noticed that the siren starts to go off by itself without the alarm of the console ringing

It is extremely reliable, connects very easily, does not even require wall installation since it also has a tabletop placement option and works both with wifi and a sim card. If you are looking for a quality central unit that can connect with many accessories, it is the excellent choice. The internal siren fully serves its purpose, but you can also connect an external one. In any case, it has no false alarms at all.

It's very good!
Its durability will be seen in the future.

update: top system... one of the best out there and at an excellent price. Stylish, ergonomic, easy, Greek, and because it accepts pgst accessories, it's fully customizable!

Very easy to install and very convenient even for children since it has a remote control. It is all touch screen and in Greek please. From your mobile phone, you can see everything and name each area, so you know what's happening. I also have a TUYA camera and I have set it up to activate the alarm as soon as it detects motion and it works perfectly. The only thing I would like is if it had a mobile network. A very good purchase for its price.