In a house I have a panel that just monitors ‘break glass’ alarms not smoke etc .

Panel now keeps giving a fault on the ground floor where there are 2 break glass alarms ( at the front door and rear ) .

This happened a few months ago aswell . Electrician checked it and tightened wires in panel - was all good for a bit .

Happened now twice in 3 days . I thought maybe the vibration of a door slamming could trigger it but apparently not .

Any ideas welcome 

Is acceptable to disconnect one for a couple of days, you might be able to pin point which one is at fault, then change it or look for possible causes easier.