E3point Cartridge can work between -20 to 50ºC (-4 to 122ºF). It makes your operation run more intelligently to protect people, property and your bottom line. It protects parking structures, loading docks, transport terminals, hospital/ambulance bays, car washes, battery charging rooms & hydrogen tanks, commercial kitchens, indoor stadiums, outbuildings and more. Various Gas options available are: Carbon Monoxide, Notrogen Dioxide, Methane, Propane, Oxygen, Hydrogen, and Hydrogen Sulphide.