What Type of Intruder Alarm System Is Best?

If you’re running a business with physical premises, good security will be fairly high up your list of priorities. Business premises are often left unoccupied for long periods, particularly overnight. So your first line of defence against intruders will be an alarm system. This primarily acts as a deterrent against intrusion. However should a break-in take place, it can alert the security team as well as induce panic in the intruder.

Modern technology provides us with an array of alarm systems to choose between. The type you opt for will depend on the level of security you require. Here’s a guide to the main types of intruder alarm on the market today.

Intruder Alarm System

Intruder Alarm System


The bells-only system is a very common option for domestic premises, though less suitable for business use. These systems act largely as a deterrent and, even in dummy form, can put off a potential burglar who may decide the risks are too great. Such systems work on the assumption that a lot of noise will alert neighbours who can then report any intrusion to the police.

Typically a bells-only alarm system will be triggered either by motion detection or when a circuit is broken, and then set off a loud audible alarm. If used for business premises where they may not be heard, they can be paired with a CCTV system for monitoring the property.

Monitored Alarms

A more effective solution for commercial premises is a monitored alarm system. This type of security system may or may not deliver an audible alarm at the premises, but will alert security staff at a monitoring centre, who can then decide which course of action to take, such as dispatching somebody to look around.

These systems usually meet the insurance requirements of a business, as they ensure that any intrusion can be challenged rapidly.

Monitored Alarm System

Monitored Alarm System


A half-way house solution might be the use of an auto-dialling system. These have the advantage of being cheaper than a fully monitored system, but can be more easily disabled.

Instead of triggering an audible alarm, they work by automatically dialing a pre-programmed telephone number, usually that of a key-holder, who can then attend the premises and investigate. However, because it can be dangerous to tackle an intruder alone, it’s often best to use such a system to alert a professional security company.

Monitoring and Key-Holding

One solution that ticks all the boxes in terms of security and the requirements of your insurance company it to opt for a combination of monitoring and key-holding. This involves having a professional alarm system fitted and regularly tested, combined with a professional security team on standby to visit the premises in the event of a break-in or incident.

After all, none of these systems are any good if there’s nobody about to intervene when required.