I did found the manuals earlier and did figure out the programming, however I will still consider these "Pieces Of Senile" technology
. Stuff like battery replacement gives only 30seconds before the programming evaporates.
It's not possible to program it from wifi or zware. no integration to smarthome hub etc.. etc..
For device which controls TWO of THE largest bills of the house - I'd want some a bit more smarts in it.
I usually do good with on-time batt replacements so, no my batt terminals not corroded.