After switching off the electric to repair a plug socket the alarm won't work. It is making a buzzing sound on the internal speaker and the key pad has no lights on it....not even a mains power light...However the keypad works but wont set.

Any help would be appreciated

Robbo76, March 2012

Battery, it needs a new battery.
Did it occur to you to use the search facility here or is that too difficult?

Mains electricity is present when opening a panel take care and isolate beforehand, if unsure get in a professional.

Alarm, March 2012