Environment Control carries out an experiment proving that not all Carbon monoxide gas detectors are alike. The old stating, "You get exactly what you pay for" holds true in this case. The security and health of your family is not something you want to jeopardize. Make certain your detector will let you know when there is CO in the air. This experiment shows that not all carbon monoxide gas detectors are the exact same. We take a look at First Alert Carbon Monoxide Detector versus CO Professionals.