Ringdale Debuting Energy-Efficient LightSpace(R) Management at LightFair International

Intelligent Controls Offer Cost-Effective Alternative to More Expensive Systems

PHILADELPHIA, May 17, 2011 - Ringdale Inc., a leading U.S. developer and manufacturer of commercial
LED luminaires, is demonstrating LightSpace(R) Management products at
LightFair International 2011, May 17-19, Booth #3251, in the Pennsylvania
Convention Center, Philadelphia. The Ringdale ActiveLED(R) booth is located
in LightFair's Building Integration Pavilion, which features companies with
products and solutions used to maximize and create energy-efficient
buildings.

Ringdale's LightSpace(R) Management products allow businesses to save
energy and money by managing the interior and exterior lighting they use.
Designed to integrate with Ringdale's ActiveLED(R) line of LED fixtures,
LightSpace enables 10-25% energy savings over the savings realized with
ActiveLED lights. LightSpace also offers the flexibility to integrate with
third-party building management systems to enable control of a facility's
lighting in conjunction with other operational systems, including heating,
cooling and ventilation (HVAC) equipment.

LightSpace benefits facility management via these four products:

LightSpace(R) Manager - A digital, programmable unit for automatic
on/off, dimmer and occupancy control that interconnects with ActiveLED
lights. LightSpace Manager has an infrared remote control option.

LightSpace(R) Controller - A network controller for receiving
instructions, firmware or programmable logic control program updates as well
as status monitoring of connected devices such as ActiveLED light fixtures,
sensors or LightSpace Manager.

LightSpace(R) Server - A browser-based application that provides remote
control and monitoring of all lighting functions as well as data collection

LightSpace(R) BMS Adapter - A building management system adapter for
interconnection with LightSpace Manager or with third-party systems for
control of all lighting functions.

Ringdale designs, develops, manufactures and markets the ActiveLED line
of energy-saving LED luminaires for commercial applications, including
streets, parking structures, billboards, building exteriors and interiors,
warehouses, offices, retail spaces, parks and restaurants. The solid-state
fixtures deliver better illumination and use 50-95% less energy than
conventional lighting sources such as incandescent, CLF, FL, HPS and LED bulb
replacements.

ActiveLED Lighting fixtures and products are backed by a 10-year warranty
on LED elements and five-year warranty on materials and workmanship. For more
information, contact Ringdale in the United States at +1-512-288-9080 or in
the United Kingdom at +44-1444-871-349.

About Ringdale

Ringdale focuses on helping organizations incorporate green savings into
their business environments. Ringdale provides ActiveLED(R) luminaires as
well as a wide range of secure document output management, access control and
document workflow solutions. Ringdale Inc. is based in the United States with
offices in UK, France, Germany, Japan and Singapore and is part of the
Network Technology PLC Group of Companies. For more information on ActiveLED,
visit www.ActiveLED.com.

Ringdale, ActiveLED and LightSpace are registered trademarks of Ringdale
Inc.

    Contact:
    Susan Vaughan
    Ringdale, Inc.
    Direct: +1-512-288-9080

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