Creation of a wireless alarm for camping cars :)

[Jeanne]

Hello,
I live a good part of the year in my camper.
I would like to install an alarm that I would have created.
I want to put a magnetic sensor (battery operated but without integrated siren) on the 4 doors of my vehicle + install a flashing light on the roof + a siren under the hood of the vehicle.
I want to activate/deactivate the alarm with a single remote control and press a single button on the remote control to activate everything (like locking or unlocking a car that has central locking).
I have a 280Ah lithium battery in the camper. It will supply 12V to the siren, the flashing light and the "central unit" which will communicate with the magnetic sensors.

Here is what I would need (I think) :

115db outdoor siren 9€:
https://fr.aliexpress.com/item/32843318861.html

flashing light 14€:
https://fr.aliexpress.com/item/32830436090.html

4 magnetic sensors 433Mhz 32€:
https://fr.aliexpress.com/item/33049171059.html

1 remote control to activate the 4 sensors at the same time 7€ (one click on the remote control to activate everything)
https://fr.aliexpress.com/item/4000168798137.html

the box that communicates with the 4 sensors 20€:
This is not what I want, but apparently there is this: https://fr.aliexpress.com/item/4000090294371.html

I have two questions:
- Is it possible to use a single remote control to activate all 4 sensors with a single press? Like a car lock key, you lock the whole car at once, from one remote. We don't have 5 different remotes for the 5 doors.
- What product should we get to be able to communicate with the 4 sensors AND be able to connect it to the siren and flashing light?

Thanks a lot for your help

[Rick Law]

Since both your sensors and siren are made by the same manufacturer PGST, contacting them is your best bet.  PGST should know for sure.  Whereas, unless someone here happened to have tried the exact same combination, we can only guess.

I do want to point out that the PGST web page for your siren, I saw only mentions of PIR detectors instead of the magnetic detectors you want, checking with PGST is a good thing to do.

[bidrohini]

 It is possible to use a single remote control to activate all 4 sensors with a single press. You have to use an Arduino for that.

[Jeanne]

Hello,
I try to ask question to the sellor but... it's not a super seller talker ^^:

Me:

Hello, is it possible to control several https://fr.aliexpress.com/item/33049171059.html with only ONE mote ? Thank you

Seller:

this wireless door sensor is suit for alarm system

Me:

ok which alarm system is compatible please ? I need a really simple and little size one.
Moreover, I repeat : is it possible to control several https://fr.aliexpress.com/item/33049171059.html with only ONE mote ?

To be continue