Thanks a lot for your comments Alan. They were very helpful.
You do have a point. "4 AA batteries (up to 2 years autonomy)" should mean it only transmits (averaged?) data once in a while (perhaps the 5 min.s in the review you mention). Still, it could be an option, considering storing 5 minutes averaged values is what most of us are doing currently.
As far as I understand per design ALL data must go through their web-servers and only afterwards is made available through an API (you can "freely" access it from there).
So, the hardware effectively seems to be as closed as it can be. To the point of sheer nonsense.
Extra sensors communicate with the base station using 868Mhz (it's in the spec.s in their website somewhere), and data is sent by IP to their servers (the link I place in my previous post pertains the hacking/interception of the packets sent by the base unit via Wi-Fi). The thing is: do they somehow obfuscate data sent by sensors to the base unit (I mean, does some sort of per case "handshake"/encryption key exchange occur between the main unit and a sensor)? If not, data sent per optional sensor could theoretically be decipherable without owning a base unit.
You do have a point. "4 AA batteries (up to 2 years autonomy)" should mean it only transmits (averaged?) data once in a while (perhaps the 5 min.s in the review you mention). Still, it could be an option, considering storing 5 minutes averaged values is what most of us are doing currently.
As far as I understand per design ALL data must go through their web-servers and only afterwards is made available through an API (you can "freely" access it from there).
So, the hardware effectively seems to be as closed as it can be. To the point of sheer nonsense.
Extra sensors communicate with the base station using 868Mhz (it's in the spec.s in their website somewhere), and data is sent by IP to their servers (the link I place in my previous post pertains the hacking/interception of the packets sent by the base unit via Wi-Fi). The thing is: do they somehow obfuscate data sent by sensors to the base unit (I mean, does some sort of per case "handshake"/encryption key exchange occur between the main unit and a sensor)? If not, data sent per optional sensor could theoretically be decipherable without owning a base unit.