If you look at statistics for burnt offerings in countries before and after the introduction of smoke detectors duty to be clearly seen that have significantly reduced with increased use of smoke detectors, the number of victims. In Baden-Württemberg 31 December 2014 was the deadline for retrofitting to smoke detectors required. With a few exceptions, all states have joined this rule and so the inventory of smoke detectors has multiplied in private and public spaces. Thus, in the event of a fire alarm is triggered in fact, it is necessary to review the life-saving warning devices regularly for their functionality. The smoke detector test spray of presto, this can now be done quickly and easily professionally and without additional test equipment.