Review on Eco Sensors C 30ZX Ozone Monitor by John Mejia

Media loading error. Here is a video of the sensor in action when I bring the C-30ZX close to the ozone coming out of my reef aquarium's protein skimmer with the skimmer's carbon hose disconnected. The C-30ZX has a good response time and the display is intuitive and easy to see from a distance as it reaches various shades of green, yellow and red. No setup required (unless you're adding a relay or changing alarm settings), just plug it in, let it warm up and start measuring! It's compact and looks great on the wall.