Paradox PiR Curtain Slight Problem

[Aokiji]

Good day gents, got a problem not having luck finding a solution every month have to change batteries on this unit and have tried multiple brands of batteries all give the same problem

notice on the TM70 it shows for that sensor every 30 mins cold boot in the logs so every 30 minutes it cold boots and its the only one doing that

is the unit faulty in that regard