Sentry Technology Sells Library Self Service Systems To The University of Alberta

Ronkonkoma, New York, April 9, 2007-- Sentry Technology Corporation (OTC Bulletin Board: SKVY) announced today the sale of 12 QuickCheck™ library patron self service kiosks to the University of Alberta valued at $172,000.

QuickCheck™ operates in a similar fashion to a bank ATM. Patrons gain access to the library’s circulation software via a user card and touch screen video monitor. A barcode or RFID chip on the book is read, the security feature deactivated and a receipt is printed identifying the titles of the books borrowed and the return date. Once the process is complete, the patron exits the library through the security system without any intervention from library staff. The entire process is fast, user friendly and frees library staff from the circulation desk to perform higher level tasks. The system includes statistical usage reporting as well as remote diagnostics and hardware management software.

The systems at the University of Alberta are configured with a new feature that will identify if more than one item is being checked out by a patron. This innovation will prevent a thief from using QuickCheck™ to borrow an item that has been recorded by the circulation software while hiding other items underneath the one that is properly registered.

“QuickCheck™ continues to be recognized as a market leading product by libraries across North America,” said Peter L. Murdoch, President and CEO of Sentry Technology Corporation. “We have sold more than 200 units and have orders to build 50 additional systems for all types of libraries that will benefit from greater efficiency and lower labor costs resulting from the use of QuickCheck™.”

Sentry Technology Corporation designs, manufactures, sells and installs a complete line of Closed Circuit Television (CCTV) solutions, Electro-Magnetic (EM) and RFID based Library Management systems as well as Radio Frequency (RF) and Electro-Magnetic (EM) EAS systems. The CCTV product line features SentryVisionâ, SmartTrack, a proprietary, patented traveling Surveillance System. The Company’s products are used by libraries to secure inventory and improve operating efficiency, by retailers to deter shoplifting and internal theft and by industrial and institutional customers to protect assets and people. For further information, please visit our website at www.sentrytechnology.com.

This press release may include information that could constitute forward-looking statements made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995. Any such forward-looking statements may involve risk and uncertainties that could cause actual results to differ materially from any future results encompassed within the forward-looking statements. Factors that could cause or contribute to such differences include those matters disclosed in the Company's Securities and Exchange Commission filings.