Hi can anyone please help? The CPU on my Yale HSA has suddenly started to bleep every 60 seconds or so a few times with a voice saying 'Low Battery'. This happens every few hours i.e. every 3-4 hours (in the middle of the night last night) then after a couple of times it stops. There is no fault LED lit nor does there appear to be anything amiss. I recently changed all the batteries in everything e.g. alarm box outside, PIRs, and two door contacts. I know there's a standby battery inside the CPU but I don't think this needs to be replaced as I think it's rechargable anyway and it's always been plugged in to the mains. I'd be grateful for any help as I'm desperate to stop it.
Many thanks
Many thanks