That's dirt cheap for a 200-300 mg/h unit :o Text says:
Can be installed on 20 gallon to 150 gallon tanks to maintain your Redox potential to 450mV or higher"
That thing would vaporize a 20g tank :blink and would even be overkill for a 150g. A Redox target of about 350 is typically all that is suggested, above that and I think residual Ozone would be present that would mess up your fish & corals.

You would definitely need something to control this unit! Maybe you already have the ORP on your system and could simply control on/off based on your ORP monitor/controller?

It has the right type of ozone generator "Corona Discharge" that is more reliable & cheap to operate.

Might be a piece of junk, but at $60 maybe worth trying, if you can rig up an ORP controller.

Maybe Todd can offer any knowledge of this unit?

BTW - I shelled out the bucks for the Red-Sea unit and it has been "Plug & Play" literally.