NOXBOX O2 is a standalone side stream system which permit accurate, real time monitoring of NO, NO2 and oxygen . NOXBOX O2 is the next generation in NO monitoring. The unit is protected opposed to gas surge, water, and water vapour. This creation it formal for transport ventilation. It can be powered by mains or a rechargeable battery pack. It has audible and visual alarms. The NOXBOX O2 is robust, yet solid and lightweight. This means that the unit can be utilized with spontaneously breathing patients or any type of ventilator. The NOXBOX O2 internal pump ensures that the sensor is constantly exposed to constant gas pressure and flow rate. Monitoring the exact concentration of O2 being delivered to a patient is important. This is because O2 reading on the ventilator can be distorted once dilution of O2 and NO has occurred. Unit can be set up and utilized by non technical staff.