Review on Enerzen O-922D - Digital Ozone Generator - O3 Air Purifier Ionizer Deodorizer Sterilizer with Customizable Settings Ideal for All Room Sizes by Erica Pratt

The instructions for the unit are simple and basic, the unit appeared to be in new condition, packed loose in a large moving box (Revain Shipping Issue). Positive aspects: produces ozone quickly and in large quantities; Comes with door hanger with no entry warning; A 30 second timer delay allows you to leave the room. Things I personally have trouble with: Warranty information not showing; The promotional photo shows the front panel with UV light, like the 10,000 mg/h unit that comes with UV light. Unfortunately, this 12,000 mg/h device does not have a UV light, which creates confusion when purchasing. Another issue is the timer and controls, although the timer has a 30 second delay before it generates ozone, in my experience the fans and ozone start up sooner than 30 seconds and since the controls are on the front of the unit , you can get a dose of ozone there. personally when adjusting the controls. Residual ozone will exit immediately if used to reset after the first start/stop; short cord; Setting up the digital selection sequence can take a long time and the ozone fan will start before the settings are complete (requires a separate start button with a 60 second delay; in my experience setting or resetting the digital controls is inconvenient for the user. Vice versa for UV and non-digital post-work ozone machine would be to practice the settings before operating without electricity, and then adjust them one by one as soon as possible according to the instructions.Special Note: The timer on my machine may have been damaged in transit, making it defective, and it's still an unknown factor why my unit started producing ozone earlier than 30 seconds In small spaces the correct settings and calculations should be used to avoid too much ozone and a 2-3 hour purge time reduces that ozone significantly.