Why does my alarm goes off when its wants. Had battery changed. Stop doing again

Thank you. However, the alarm went off first off and on lasting two days. Took to shop then the repair guy said it was battery so I purchased new battery. After couple days it went off again. What do I need to check for? Is this an alarm problem?

Thank you. However, the alarm went off for two days before I replaced the new battery. After replaced battery it went off again in a couple of days. Is this a alarm problem what do I need to check for.