Amz201

Hi everyone, I live in a rented house fitted with an Optima Compact G3 alarm. We've never used the alarm since living here and weren't supplied with a code by the landlord. Until now all the lights on the alarm have been green. This evening we had a power cut which has caused the alarm to change. We were out when the power cut happened so don't know if it made a sound, but the outside box is flashing and the display now has red lights next to 'Tamper' and 'Power' (see photo). We did consider pressing the reset button but were reluctant to this this incase this caused the alarm to go off, which we don't want to happen as we wouldn't know how to stop it! Is there a simple solution to getting this sorted without getting our landlord involved. Sorry if this seems like a silly question, it's our first house and we're not really sure what to do Any help and advice greatly appreciated! Thanks, Amy Also the buttons in the photo aren't that clear (the say Chime, Omit, Reset, Programme, Set)