Oxygen  O2  can monitor Exit doors, LPG leak, Co2, Air quality, Air dust content, Temperature, Ultra low temperature monitoring, Light intensity, human presence, Movement detection, Thermal detectors. 24x7 full speed scanning 2000 times in a second, accurate reading and high reliability. Live push notifications - Live messenger integration with live photos. Light weight communication protocol for fast and easy notification. Few bytes can do the job. Exit door monitoring to the new level of security and protection. System can send live photos if any events happened. Live monitoring can be installed in any number of devices. Mobile device support