Solo C6 provides a fast and simple way of meeting the requirements of CO detector testing legislation by introducing real CO to the sensing cell of the detector. As the world's first UL Classified CO detector tester, Solo C6 is the professionals' choice for ultimate peace of mind in ensuring the detector is functioning correctly and protecting the lives of those around it. Also for dispenser use to test multi-criteria/CO Fire detectors and alarms. Genuine and non-flammable CO gas Fast test and re-set time Controllable and safe CO detector testing Only CO tester approved for System Sensor 1224T / A / R CO detectors & Interlogix SpaceAir 250 CO Alarms Detector manufacturer endorsed UL Classified