Sentry Security Systems Inc.

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Sentry Security Systems Inc. is one of North America's most trusted security solution providers; supplying fully supported, superior performance, lower cost security products. Sentry access control products are easy to install and use and all equipment is fully supported with superior performance backed by personalized technical support. Our complete line of access control products provides our customers with the perfect blend of technology, ease-of-use and price for all their access control needs.

Access Control Overview: Access Control refers to the practice of restricting entrance to a property, building or room to authorized people. This can be accomplished by a person, such as a receptionist or guard, or by mechanical means such as locks and keys. More recently, Access Control has come to be accomplished by technological means using (primarily) card access systems.

The most common type of Access Control system uses access control cards and card readers. These systems use readable cards that allow cardholders to unlock doors by presenting their card to a reading device, offering many more advantages than simple mechanical push button keyless locks. In its simplest form, a card will either unlock the door &emdash; or not. In more complex systems, a particular card may only allow entry through some doors and not through others, or it may allow entry at particular times and not at others. Necessary information about who has what card and what access each one has, are stored in the controller(s). The readers at each access controlled door relay the particular card ID to the controller(s) which validates the card’s associated access permissions and either sends a signal to the door to unlock &emdash; or not.

Controllers may be configured and card users enrolled into the system by using a reader and keypad or remote control device. Usually if it is a simple single door system with few users, configuration and enrollment is performed using a reader and keypad or remote control device. Multi-door, more sophisticated systems use the supplied software program. Information about card holders and permissions is uploaded to the access controllers from the software. Card users can be added and/or removed and access schedules and permissions changed very easily using the software. The PC running the software can be attached to the controllers permanently or as needed. The software can be used to monitor access activity both historically and real-time. A log is generated of which card was presented to which reader, by time, and whether the respective door was opened therefore creating a history of who went through which door and when.

Controllers come in single door or multi-door versions, depending on the manufacturer. Many single and two door controllers can be connected together in a network, so that all can be configured and updated at the same time from a connected PC. Using controllers that are networkable, such a system can be easily expanded to accommodate more doors - even in other buildings.

Card readers can use a “Swipe” card (magnetic stripe) but generally today use “Proximity” cards which use RFID (Radio Frequency Identification)that only need to be held near to the reader for the card’s ID to be read. This type of card has the advantage of never wearing out and being very difficult to duplicate, However, proximity cards can be misplaced, stolen or “lent” allowing unauthorized access. Because of this, in very secure areas, additional methods of entering unique user information are used. This varies from a simple PIN on a numeric keypad to biometric devices such as fingerprint readers or even retinal or facial scanners. In most cases, these are used in conjunction with a card reader.

Doors are locked and unlocked using an Electric Strike or Magnetic Lock. When a card with the appropriate permissions is presented to a reader, the controller sends a signal to the locking device unlocking the door. Electric Strikes and Magnetic Locks can be either Fail Safe (powered when locked) or Fail Secure (Not powered when locked). In general, buildings without a Fire Alarm system use Fail Safe locks that open during a power failure. In buildings where a Fire Alarm system is installed, Fail Secure electric locks can be used. The Fail Secure locks must be connected to the Fire Alarm system so that in the event of a fire, all the doors will be unlocked by the Fire Alarm system. Magnetic Locks are always Fail Secure, while Electric Strikes can be either Fail Secure or Fail Safe.

Today’s Access Control systems provide many intelligent features such as anti-passback where cardholders are allowed to exit a door but not to re-enter. In addition they can interface with burglar alarm systems and video surveillance systems to provide a high level of security sophistication.

GeoVision™ Access Control Kits

Geovision™ Access Control Kits are cabinets containing a GV-AS, a power adapter board, a power supply and a casing for backup battery. The power supply provides power to GV-AS Kit and up to 8 output...

GeoVision™ Camera Reader Controller

The GeoVision™ Camera Reader Controller is an access controller with a built-in 2 MP camera and 13.56 MHz reader. It is designed to recognize identification cards and grants access to up to 40,000...

GeoVision™ Long Range RFID Reader

The GeoVision™ Long Range RFID Reader is a Radio Frequency Identification (RFID) reader of ISO 18000-6C (EPC GEN2) standard. Designed for parking lot management, the reader can read RFID tag within...

GeoVision™ LPR Display Box

The GeoVision™ LPR Display Box is a Linux-based license plate recognition system built in a small box. Integrating with a Web server, the GeoVision™ LPR Display Box can host its own website...

Rosslare Access Control Kits

Rosslare's state-of-the-art dual/quad core networked access control kits are a powerful addition to medium scale security systems, handling up to 30,000 users and 8184 doors. Driven by Rosslare’s...

Rosslare Access Controllers

Rosslare's Access Controllers are designed for applications with up to 30,000 users and 8184 doors, allowing maximum flexibility for securing a growing enterprise. Each access control unit (ACU) supports...

Rosslare Kit Door Expanders

Rosslare’s Reader Expansion Boards are a part of a highly advanced line of expansion modules that work seamlessly with Rosslare’s state-of-the-art AC-225 and AC-425 networked access controllers. The expansions...

Rosslare Proximity Readers

The AY-KR12B is a powerful RFID proximity card reader of 125 KHz cards and tags, featuring Wiegand 26-bit output format and a read range of up to 8 cm (3.15 in). With a miniature sleek design, and...

User Credentials

Rosslare's 125KHz User Credentials are simple and easy to use, made with high-quality materials for increased durability. Both the cards and FOBs are sized perfectly for storage in a wallet or...

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- Clayton Potter
Pike Country School Board

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