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DGA Security Blog

Our business security and fire systems experts answer the most frequently asked questions, no holds barred. Read on.

Blog Feature

Intrusion Alarms

By: Michael Reynolds
July 29th, 2021

When it comes to door/window contact sensors used in business security systems, the most common mistake we see is either overuse or underuse of these devices. Sometimes we see a contact sensor installed on every door and window regardless of location – which likely increased the installation cost without adding additional security benefit. Other times, we see doors and windows that are easily accessible from the outside missing a contact sensor, making the business vulnerable to potential intrusion attempts.

Blog Feature

Intrusion Alarms

By: Larry Weintraub
April 30th, 2021

When we are designing business security systems, we sometimes get pushback from clients about whether they really need motion sensors in addition to door/window contacts. At other times, we get pushback from our clients’ architect who asks us: “Do we really need a motion sensor in that spot? Can you move it to a more hidden location?”

Blog Feature

Intrusion Alarms

By: John Kolb, CET, CPP
April 29th, 2021

Modern electronic glass break sensors are smart devices that are highly effective at detecting a breaking glass window. But the truth is glass break sensors can be tricky in a business security alarm system. High-pitched noises from outside can cause false alarms. Furthermore, some glass window types don’t shatter in a way that can be picked up reliably by these sensors.

Blog Feature

Fire Systems

By: Daniel Torpey
August 31st, 2020

Emergency Control Function Interfaces allow fire alarm systems to communicate with other critical building systems during a fire emergency to ensure the safe evacuation of occupants. 

Blog Feature

Fire Systems

By: Daniel Torpey
August 27th, 2020

Remote annunciators are smaller panels that provide a fire system status and a limited set of functional switches (e.g., acknowledge a signal or silence an alarm).

Blog Feature

Fire Systems

By: Daniel Torpey
August 26th, 2020

This article provides an overview of different types of fire alarm notification devices, which alert the building occupants to evacuate the premises or relocate using both audible and visual alarms when the fire system detects a possible fire. The most common notification devices installed today are strobes, horn strobes, speakers and speaker strobes.

Blog Feature

Fire Systems

By: Daniel Torpey
August 14th, 2020

All commercial fire alarm systems are required to be monitored 24/7 by an outside monitoring center that is equipped to respond to and handle fire alarm events. But what should you look for when selecting a monitoring center (also referred to as a "Central Station") for your fire system? This article explains the important role that monitoring centers play and provides a primer on how to select a qualified monitoring center.

Blog Feature

Access Control

By: John Kolb, CET, CPP
August 4th, 2020

As businesses everywhere are working their way through the Covid-19 pandemic, we’ve been getting calls from our clients to help them open their doors safely – and we mean that literally. We have been installing automatic door openers to create hands-free door entry systems for office suites, office bathrooms and more.

Blog Feature

Fire Systems

By: Daniel Torpey
June 24th, 2020

Supervisory switches are a group of initiating devices that are installed at different parts of the automatic fire sprinkler system and are monitored by the Fire Alarm Control Panel (FACP). Their job is to monitor the sprinkler system to ensure that it’s in proper working condition and to transmit a supervisory signal to the FACP when an issue is detected.

Blog Feature

Fire Systems

By: Daniel Torpey
June 23rd, 2020

This article provides an overview of manual pull stations and waterflow switches, which are both fire alarm initiating devices. We'll explain what they are, how they work and where they are used. In commercial fire alarm systems, initiating devices play a critical role of detecting an active fire and dangerous level of carbon monoxide as well as monitoring the sprinkler system to ensure that it's in proper working condition.

Blog Feature

Fire Systems

By: Daniel Torpey
June 23rd, 2020

This article provides an overview of heat detectors, carbon monoxide (CO) detectors and multi-sensor detectors, which are all fire alarm initiating devices. We'll explain what they are, how they work and where they are used. In commercial fire alarm systems, initiating devices play a critical role of detecting an active fire and dangerous level of carbon monoxide as well as monitoring the sprinkler system to ensure that it's in proper working condition. 

Blog Feature

Fire Systems

By: Daniel Torpey
June 23rd, 2020

This article provides of smoke detectors, duct smoke detectors and beam detectors which are all fire alarm initiating devices. We'll explain what they are, how they work and where they are used. In commercial fire alarm systems, initiating devices play a critical role of detecting an active fire and dangerous level of carbon monoxide as well as monitoring the sprinkler system to ensure that it's in proper working condition.