I have a Veritas 8 alarm and it’s stopped working. My electric has been off for about 30mins and it seems it went to the back up battery maybe as none of the lights went off. I have tried to re-set it now the electric is back on, but it doesn’t matter what button I press nothing is working. Any idea what I need to do? Many thanks. 

I assume the system hasn't been serviced in a while? Battery may have not been able to support the system or there could have been a surge when the power came back on.

If the keypad is unresponsive you may need an engineer to check it over, power cycle and reprogram it if required.