It is clear from the complete text on the linked page that "объекты информатизации" include the following:
- средства изготовления и размножения секретных документов
- вычислительная техника
- локальная вычислительная сеть (от 5 ПЭВМ)
Each of these can be called a piece of equipment or an [office] equipment item

Notes:
1. Even though "informatization item" is shorter and more like the original, it may sound too vague, e.g. as referring to a step in an informatization process rather than a piece of equipment
About informatization as a process, see
http://en.wikipedia.org/wiki/Informatization
2. The term "informatization equipment" is mostly used in Chinese documents, and even sounds a bit "too Chinese," but this does not make it less reasonable since the term "информатизация" itself has been most widespread in Russia and China, see
http://ru.wikipedia.org/wiki/Информатизация

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Note added at 6 час (2011-06-20 19:00:56 GMT)
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The plural
"объекты информатизации"
can be translated as
"informatization equipment"

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Note added at 1 дн20 мин (2011-06-21 12:24:50 GMT) Post-grading
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Any time, Richard :)