It depends on your specific security needs and the type of property you are trying to secure. Both CCTV (Closed-Circuit Television) and alarms can be effective in providing security, but they serve different purposes.
CCTV cameras allow you to monitor and record activities in real-time, and they can also deter potential intruders. This can be particularly useful in detecting criminal activities and helping to identify perpetrators.
Alarms, on the other hand, are designed to alert you (and possibly the authorities) in case of an intrusion. They can be set to trigger if someone enters the property or if a specific area of the property is breached. Alarms can be loud and disruptive, which can deter intruders and alert you to an issue.
In some cases, it might be best to have both a CCTV system and an alarm system. For example, you could use a CCTV system to monitor your property, and an alarm system to alert you in case of an intrusion. This way, you have both the deterrent effect of the cameras and the alerting effect of the alarm system.
Ultimately, the choice between CCTV and alarms will depend on your specific security needs, the type of property you are trying to secure, and your budget.