Thank you for the advice - and the unnecessary, unwanted sarcasm (keyboard warriors: safe behind their monitors!) I have changed the battery, which has stopped the alarm sounding when the power is turned off - thank you - but the keypad is still not functioning. The the numerical pads are lit up, but not the 'day' or 'power' ones at the bottom and pressing them does nothing or even sounds like before. When the front is off the main box the tamper alarm does not sound either. I have checked the fuses and all appear intact, is here anything more I can do or check myself myself, please? Thank you for any help, Rich
Rich, November 2012