I want to make a “true” security system based on xiaomi sensors and HA on a Pi zero. Can you help me on choosing following components ?
Alarm which can make some noise ! (gateway volume would make any thief to laugh )
I don’t have any rfxcom so I need to communicate with alarm via wifi (I’ll take 2 or 3 to put inside and outside the house)
Backup power (where I can plug gateway, PI zero, internet router and an alarm) (line interactive one)
(I think I’ll take this one https://www.amazon.fr/Eaton-ELP650FR-Onduleur-Noir/dp/B00D13RF6U/ref=pd_cp_421_1?_encoding=UTF8&psc=1&refRID=4PV0MG227MF8XMMH7MWF)
An USB GSM key (If internet is down) Found this one : https://www.amazon.fr/gp/product/B00ORLBDPE/ref=as_li_tl?ie=UTF8&camp=1642&creative=19458&creativeASIN=B00ORLBDPE&linkCode=as2&tag=rosty-21 not sure it’s the best option.
If someone has already do this kind of choice it will save me hours digging forums looking for best option