What is the purpose of sensors in perimeter and building security?

One thing unites perimeter security systems, CCTV cameras, and security alarms: they’re all meant to keep burglars off your land or property. Alarms require a sensor of some kind in order to work; this sensor can detect movement or activity, such as the presence of a person, the triggering of an alarm on a closed door, or the shattering of glass.

Building and perimeter security systems come in a variety of forms, but they all need to include sensors that can distinguish between naturally occurring noises and movement brought on by the wind, rain, or animals, as well as motion, tampering, or the presence of a vehicle.

Today, this article will describe the functions of sensors in gadgets and alarm systems that you may want to install to bolster the security of your property, as well as how various kinds of security detectors operate.

An explanation of perimeter and building security sensors

Numerous sensors, as we’ve seen, rely on various parameters to work. The majority of cutting-edge security systems may be configured to meet your specific needs: this means that your surveillance networks or alarms will only transmit an alert notice, sound an alarm, or notify your security response team in reaction to a predefined activity.

That could consist of:

  • Seeing a car approaching from behind the boundaries of your facility.
  • Recognising one or more individuals beyond business hours.
  • A seal being broken or a door, window, or lock being opened.
  • The presence of heat, water, fire, smoke, or gas.
  • When a gadget is relocated, disturbed, or otherwise disrupted, an automatic alert will sound.


Activation of sensors might be triggered by vibration, sound, movement, temperature, or by more technological factors like body heat signatures; this will depend on the most common dangers and the characteristics of your establishment.

In addition, they are employed for non-security uses like tracking down a staff member or keeping an eye on employees’ productivity and PPE compliance.

Why do sensors play a role in building and Perimeter Security Systems?

It is rarely possible for on-site security personnel to have continuous visual awareness of every area of your property. Even though they can’t completely cover every possible entrance point, security patrols, access controls, gated barriers, and manned entry points are still excellent methods to strengthen security measures.

But, from the farthest point away from the guarded station, an attacker may reach the site by scaling a wall, breaking through a fence, or using force without being noticed, observed, or captured. Even though this is a straightforward example, it shows why sensors are so important. To trigger security teams to look into odd or suspicious conduct, surveillance and alarm systems need to be able to identify it.

In summary, a sophisticated alarm system with sensors functions as a constant watchdog, sounding the alarm as soon as something unusual occurs and necessitates additional action.

Types of alarm system sensors

The best sensors for your home or place of business depend on a comprehensive, expert risk assessment. Every security system or installation operates differently. Security experts may identify your biggest risks through this assessment process and provide the best solutions to reduce or eliminate them.

  • Motion detectors utilise infrared technology, which may be adjusted to ignore movement smaller than a specific size in order to reduce false alerts from nearby animals.
  • Ash particles and other variations in air quality, as well as elements like water, gas, and chemicals, can be detected using environmental detectors.
  • To determine if vibrations are coming from a human climbing, walking, or crawling, a car, or any questionable action like slicing through cables or fences, vibration detectors frequently utilise algorithmic analysis.
  • Similar technology is employed in door or window alarms, which sound an alert if the two pieces of the sensor are detached. Glass break detectors are often mounted on windows and within entrance doors to raise the alarm when the surface is damaged.


As a way to detect movement in any low light situation – including at night and away from light sources – many of these security detection devices employ infrared light. 

Your alarm sensors’ accuracy may be further increased by adding extra features like photo verification or correlation analysis, which allow devices to compare signals in real-time and decide if a live incident is occurring.

Selecting the appropriate building and perimeter security alarm sensors

A primary security review can be helpful for any building, property, or business since it helps you target your resources efficiently and determines the best locations and features for your alarm sensors. We’ve outlined some of our most popular security systems and gadgets below, along with information on how each one operates and what sensors are included.

inView Detect Perimeter Security

You may use this wireless intruder detection system anywhere there is a high degree of hazard (since it is portable and easily accessible).

With its independent power system, inView Detect may be quickly deployed and utilised in a variety of settings, including as open spaces or building sites, to safeguard certain assets or pieces of equipment. It can also be placed in a network to cover a larger area.

Every intrusion detection device has 360-degree coverage and, when movement is detected, sounds an alarm in accordance with your security procedures, eliminating triggers that are up to 80 cm tall in order to prevent false alerts.

Alarms for commercial intrusion

With a variety of devices and integrated units that can detect movement, unexpected access, fire and smoke, as well as when a piece of machinery or equipment is moved or disappears, our selection of commercial intruder alarms is appropriate for any type of company or location.

Your intruder alarm can alert responders based on your programmed settings, including when anything happens at a location that isn’t supposed to be used, when a car approaches an illegal entrance point or when a person is found within the perimeter.

Each of these solutions includes cutting-edge, configurable sensors to guarantee that you can respond quickly to any suspicious or unwanted activity and that you always have the option to arm, disable, or remotely access your security systems.