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A carbon monoxide (CO) detector is a life-saving device designed to monitor the presence of carbon monoxide in the air. Carbon monoxide is often called the "silent killer" because it is odorless, colorless, and highly toxic. It is produced when carbon-based fuels—such as gasoline, oil, or natural gas—burn incompletely. Common sources include running vehicles, furnaces, water heaters, stoves, and generators.

An automatic door opener is an electric-powered device that can open or close the door after receiving a signal from an access control system. This system enhances convenience and accessibility while maintaining security by integrating with an access control system. When a person presents an authorized access credential, such as a keycard or fob, to the reader, the automatic door opener activates, opening the door for a predetermined period (typically 5–10 seconds) before closing it again. For exiting, a touchless egress button located near the door allows users to wave their hand, triggering the door to open automatically. Automatic door openers also have a built-in safety system. Sensors embedded in the device detect obstructions in the path of the door. If an object or person is in the way, the system halts the door’s movement, preventing accidents or injuries. Automatic door openers are especially useful in high-traffic areas, facilities prioritizing accessibility, or locations requiring frequent entry and exit. They strike the perfect balance between security, safety, and ease of use.

A fire door is a door with a fire-resistance rating made from materials that can withstand fire and high temperatures for a specified period. They are designed to limit the spread of fire and smoke in a building. Fire doors are rigorously tested to meet stringent safety standards, ensuring they perform effectively during a fire.

A mantrap, also known as an interlock, is a sophisticated security entrance system designed to enhance safety and regulate access. It consists of a small, enclosed space equipped with two sets of doors. These doors are equipped with a control system designed to allow only one door to be open at a time, ensuring strict access control. This configuration is crucial for maintaining strict access control, preventing unauthorized entry, and enhancing security measures in sensitive areas.

Facial height surveillance cameras are custom-designed and built DGA cameras mounted at face height with high-resolution sensors that clearly capture the faces of the people near them. They are often installed near entrances to record the faces of people entering a business. Facial height surveillance cameras are a great solution for businesses with high-value goods as they effectively deter those who might try to obscure their face via something like a brimmed hat which can sometimes pose a problem with ceiling-mounted security cameras.

In access control systems, a transaction refers to a record containing pertinent information about an access control event. Transaction history refers to the activities of the access control system that can be recalled on demand. These activities include access granted, access denied, and unauthorized attempts classified by credential, door, and time, such as an entry attempt at the main entrance using an invalid badge at 3:00 PM. Transaction history is an important tool in managing your access control system and knowing who has gained access to what and when. Regularly checking transaction history can help you to keep your business secure by monitoring for suspicious activity.

Environmental Monitoring is the process of continuously observing and recording environmental conditions in specific areas of your business premises. This includes tracking factors such as temperature, humidity, the presence of water, power failure, and other critical conditions. Real-time alerts are generated each time a significant change is detected, allowing you to respond quickly and prevent potential damage. Environmental threats like water leaks, extreme temperatures, and high humidity can be just as damaging as theft or fire. For example, a sudden increase in temperature or a water leak in a server room can lead to equipment failure, data loss, and significant downtime. Similarly, in a stockroom, excess humidity could ruin sensitive inventory. Environmental monitoring systems, such as those provided by DGA, are designed to protect sensitive areas within your business, such as stockrooms, server rooms, and other critical spaces. These systems are equipped with sensors that detect changes in environmental conditions, such as temperature fluctuations or the presence of water, and immediately notify you of any potential threats.

Redundancy in a monitoring center refers to a duplication of critical systems such that if any component of the monitoring infrastructure fails, there is a backup in place. There are three different levels of redundancy: cold, warm, and hot.

Dual-factor authentication, also known as two-factor authentication (2FA) or multi-factor authentication (MFA), requires two pieces of evidence (credentials) to be granted access.

Wide Dynamic Range (WDR) is a technology commonly used in security cameras that balances the light in high-contrast images to produce a crisp, high-quality image. WDR is often applied in outdoor security cameras where there is greater unpredictability in lighting.

A high-security tag is a type of access credential in the shape of a small, round sticker. Other types of access credentials include access cards, key fobs, and mobile-based apps.

Unlike a wide or narrow angle lens, a varifocal lens is a camera lens that can be adjusted to provide either a wide or narrow field of view. Varifocal lenses have more versatility than other types of lenses as they can be adjusted for the environment they are in, making them suitable for open spaces like parking lots and tight areas like hallways or alleys. They are often found in standard dome cameras which are the most widely used type of dome camera.