Sorry i dont use the brand as ive found it and most others poor in this regard.if your looking for acurate detection look at deepstack, tensorflow etc. Get a tpm and forget using built in functions.
Some points. If a battery device was transmitting all the time with the size of the battery they have, how long do you / she think it would last?
Also the power transmission is very very low, tv radio etc would be in the area all the time.
I assume she doesnt use a mobile phone?
sorry might of missed something. RIO tampers> Are the actual rios going into tamper or the circuits on the rio.
Have you got a log extract you can upload?
id assume the internal bell is connected to the external and isnt a speaker. Id go with a tamper on one of them but would need to see pics of how its wired
yes disable line fault monitoring. Its going to be more of an issue with BT killing pstn lines. Im sure we will see more of it on here soon. Who could of predicted it...