Hey everybody i just want to introduce myself first of all, im not from UK but im in desperate need of some help with this DIY system, any help will be very appreciated.
So i am trying to secure a cottage in the back garden. See picture below
As for the alarm im going with this pcb here Here , then ill add a standard 12v sealed lead acid battery maybe 12v x 1.3 AMP, Ill be geting a 220V to 16 VAC @ 1amp adapter to run the pcb board & a 12v 110db siren. I already have a 4 button & 1 button remote to program it in. The PIR motion sensors which cost about 8 € each they have a 12m range with a 160 degree angle according to its specs ( link : Here ) this is another one that costs about 10 € ( Link : Here ) i also have a flood light that i could take the sensor off and place that one outside by the two windows.
As for the PIR's i wanted to run them outside but i dont think that will be a wise option at all ? So i thought of putting one inside protecting the windows & then out sitting outside under the roof by the two doors in the picture. If you have any other suggestions please give some input.
Would you think the PIR's i listed would detect even a slight movement of the window opening ? I would prefer if it goes if before they are already standing inside the cottage, ill be really happy if i can get some feedback.
I have a computer with two webcams would could act as surveillance and motion detection with notification, i was even thinking of putting the one webcam outside by the two doors with a small led attached, then doing the same outside but im open to suggestions about what the best, secure, failsafe method is.
Thank You all : )