You could use port forwards but I recommend vlans or vpns. Ideally use something like a draytek router and link all sites together via vpn.
Alternatively you could look at smoothwall units or openvpn
This is a IT solution as I wouldn't recommend passing security information over your wan with out strong encrytion.
Any of the premiers could do that but u will need a few modules. Have a look at the Honeywell flex this will do as you need and has app support. I wouldn't recommend sms alerts unless using a gsm module.
The active beams come with pole mount brackets so you can concrete in the pole and attach. No you cannot get mirrors designed for the purpose, while the theory is sound it would be a difficult to setup and maintain.
Id advise a siemens eline dt in that situation. Its the best pet sensor I've personally tested. But the only 200% way is to use perimeter protection, ie vibs and contacts
Could be but id be surprised. First I check day mode current Dc supply voltage at the detectors And ac ripple on the cabling What do you have connected to the panel? If you could post the readings above please
As you have rasied a ticket it will be discussed here to.
But as i dont have that info just yet was it all ordered together or are you adding older kit to new gear?
Vibs will be fine but you need to factor in the reduced real detection area on plastic. As with all perimiter protection has the same same fa causes. If fitted incorrectly. Most common on plastic doors and windows is to have too few units covering a too large an area
1 yes you are correct you only need links on unused inputs
2 the alarm will sound when you power it up ie when the mains is connected
3 yes that is for the optima