Application: Building Access Control
Quatech Products Used: SSEW-100D one port RS-232 Wireless Serial Device Server

Card readers are often used to control access to a building or a specific area of a building. These devices read an ID card, and grant access only when the card sends an approved code. These code tables are stored on a network server that must be queried every time someone attempts to use an access card. Rather than placing an entire PC workstation at the gate, using a wall mounted single port serial device server is an easy and inexpensive way to implement the system. The Card Scanner itself can be mounted on the front side of the wall and the SSEW-100D on the back. The Scanner is connected to the SSW-100D via a serial cable run through the wall. The SSEW-100D itself is hooked into the building's Ethernet Network and functions as if it were a native serial port on the access granting network server. When a card is swiped, the ID is transmitted through the SSEW-100D to the server which either validates or rejects the code. Upon validation, the door is remotely opened (In fact, that access door could also be remotely controlled via a wireless device server), if the card is rejected the scanner will flash a no access code.

Application: Building Security
Quatech Products Used: SSEW-100D one port RS-232 Wireless Device Server

Many buildings use a network of cameras for security monitoring. These cameras are placed throughout a complex, and signals from them are relayed to a monitor bank for viewing by security personnel. Using a single port wireless device server is a fast, easy way to bring these cameras onto a network so that they can not only be viewed from the security booth, but from any Internet enabled computer with access to the network. A diagram of such a system is pictured below: