This small 12V device takes care for that you and your family can sleep calm and safe. On the basic of new researches and statistics can surely be said that the gas for such purpases is without difficulties free available on the market. The spraying of such gases in clothed rooms has an narcoting effect, not suddenly but after inhaling it for some minutes. In case the gas penetrates your motor caravan or caravan you would be alerted by an alarm - long time before the gas could be effectiv. The alarm tone is so loud that you would wake up and the potential robber would stop further activities.