There are various types of humidifiers, oxygen tubing and cannulas/masks that can be used with this machine. Specified humidifiers and accessories could impair the gadget’s general performance. Incorrect utilization of the ability wire and plugs may cause a melt away, hearth or other electrical shock hazards. Never use the unit https://allhealthmarket.com/product/medical-supplies/portable-oxygen-concentrator-generator/oxygen-concentrator-machine-camping-use-oxygenator-driving-oxygen-bar-with-24-hours-battery-lasting-oxygen/