The Semmco LPS Alarm Trainer provides trainers and users alike with an easy to use version of the audio and visual alarm that features across the range of HEAD Breathing Apparatus.  This unique and life saving feature informs the wearer of the breathing time available when wearing the set.  It alarms at three intervals: when the set is initiated as it is pulled from its packaging, 2/3 duration and at the end-of-use of the set.  It is vital that the wearer is familiar with the different intervals and this Alarm Trainer enables them to understand and practice the alarm indicators.