20'000 hours of operation

SCHAFFHAUSEN (December 31, 2006) --- The reliability of the five field test units has successfully been proven under real conditions during more than 20'000 hours of operation. This is particularly valid for those units which are operated in inhabited real estate. The field tests will be terminated in spring 2007.

The consolidated findings gained during the field test period will now be used in the course of the development of the next generation modules available in 2008.