Hi cctv systems are a much better security device than a alarm system
alarm system is only active when set and most businesses switch them off 9 to 5 and when in use it only alerts you.... cctv collects information 24/7 and records all information
most cctv also has option with it having alarm inputs or camera set as alarm device ....... most system have a schedule time set for each camera or pie attached to go into alarm detection mode ..... also a lot of units allow you to set alarm once area is closed just by going into app and setting alarm on