Hi, i need to replace the battery in the main box under the stairs. My main concern is the external alarm, if i switch off power to the unit and then open the box the alarm will go off due to the battery i assume in the outside unit. Can i stop the alarm by keying in the code or will the alarm keep going off until i have closed the box again? I am happy to do the job myself but if external alarm is going all the time as i replace the battery i may be inclined to get someone out. If it goes off for 5 seconds and i can key in code and get on with battery changing then i have no issues.
The next question was around what battery is it and from where please?
The next question was around what battery is it and from where please?