Hi
Many thx , I understand now.
Since you seems to have good knowledge in alarm systems,Just 3 more advises
1- what kind of ILS (door contact) do I need, I think 3 wires with normally open and normally closed ? Please confirm or share an internet link
2- if I want to create a zone with several ILS (door contacts in parallel) can I put the ILS(S) in parallel ? If yes I may need two resistors per zone. Please confirm
3- what kind of wires do I need for alarm system ? Can you please share an internet link.
Two extra questions, regarding pir sensors , it is possible to do the same cabling for pir sensor? What kind of pir sensor should I use? Is there normally open and normally closed pir sensors?
Do you know If I can find an ups for arduino if the thief shutdown my electrical network?
VERY THX