How to change your Alarm battery Bosch
Open the Metal case, this may set the alarm to sound if the alarm sounds enter your four digit pin code followed by #/away.
Now remove the positive lead (red) then remove the negative (Black),
Remove the old battery and replace it with the new battery,
Place the negative lead on the negative terminal (black)
Place the Positive lead on the positive terminal (red)
Close the panel up, fully arm the security system from the keypad and then disarm.
To purchase a new Bosch alarm battery CLICK HERE
This alarm battery is Suitable for all Bosch alarm systems.