Strangely enough the battery was replaced a month ago. I've opened it up and can hear slight buzzing but can't say where from. If I take out the fuse and run on back up battery alone ..... no buzzing??
Very new here and no nothing about electrics so hope you can help.
Tonight my alarm panel has started to emit a low buzzing/humming noise ....it's works ok and it's not hot. What should I do next.
