Hi, moved into a new house this year with a supposedly disarmed security system.. long story short it isn’t disarmed. It’s went off today and I’ve managed to get the outside alarm off but the keypad is making an incredibly annoying high pitched squeel, I’ve never had a code and to my knowledge there isn’t one. The security system is a intellisense. Would really love some help in turning off the annoying noise however I’m now too scared to push any buttons and set off the outside alarm again so any help would be so appreciated, thank you in advance!