ActiveLED(R) High Bay Round Light Delivers Performance and Durability to Highest Standards

Unlike Conventional Lighting Sources, ActiveLED Lighting Experiences no Light Loss

AUSTIN, Texas, March 22, 2011 - Ringdale Inc., a leading U.S. developer and manufacturer of commercial
LED luminaires, announces that after three years of production and
installations, its ActiveLED(R) High Bay Round Light continues to operate at
no light loss, a testament to its benchmark performance, efficacy and
durability. Customers looking to replace conventional, inefficient and noisy
high pressure sodium (HPS) and high-intensity discharge (HID) lighting for
more sustainable, totally quiet lighting in manufacturing plants, warehouses
and other "high bay" facilities have turned to the ActiveLED High Bay Round
Light.

In Hillsboro, Texas, south of Dallas, Ringdale converted 250-watt HPS
lights in the Hill County Men's Correctional Facility gymnasium to ActiveLED
High Bay Round lights. "We are very impressed with the light quality coming
from the ActiveLED fixtures," said Hill County Chief Deputy Stephen Girsh.
"Unlike the old lights, the ActiveLED fixtures provide a crisper, more
uniform light with softer shadows. We also look forward to passing on the
lower energy costs to our taxpayers."

The 78-watt ActiveLED High Bay Round Light provides bright, uniform
coverage while saving up to 85% in energy consumption. With the
ever-increasing rise in energy costs, the High Bay Round Light "makes it a
better hedge for the future," said Klaus Bollmann, CEO, Ringdale.

Rated at 90,000 lumen hours (24/7 is 8,760 hours per year), ActiveLED
lights are the longest lasting LED light fixture on the market, which also
helps lower maintenance costs. With the addition of Ringdale's LightSpace(R)
Manager(TM) digital management solution, a facility's utility bill can be
further reduced an additional 10-25%.

Another next generation energy efficient feature of the ActiveLED High
Bay Round Light is its "all voltage" (100V…277V) and 48V DC approach. The
light can be backed up by a Ringdale Battery Pack or be driven from a 48V DC
power supply. This cannot be done with conventional lighting technology.

Like all Ringdale luminaires, the ActiveLED High Bay Round Light comes
with an industry-leading 10-year warranty on its LED device and fixture and
5-year warranty on its power source.

About Ringdale

Ringdale focuses on helping organizations incorporate green savings into
their business environments. Ringdale provides ActiveLED(R) luminaires with
patented, solid-state lighting control and thermal management technology 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 the United Kingdom, France, Germany, Japan and Singapore and
is part of the Network Technology PLC Group of Companies. Visit Ringdale at
www.ringdale.com/lighting.

Ringdale(R), ActiveLED(R) and LightSpace(R) are registered trademarks of
Ringdale, Inc.

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

For more information on ActiveLED Lighting, contact Ringdale in the
United States at +1-512-288-9080 or in the United Kingdom at
+44-1444-871-349.

Contact: Susan Vaughan, Ringdale, Inc., Direct: +1-512-288-9080; For more information on ActiveLED Lighting, contact Ringdale in the United States at +1-512-288-9080 or in the United Kingdom at +44-1444-871-349.