can accomplish the same thing with a dehum, heater, and ac. Which is cheaper? Which scales properly? Temp and RH control while making use of a pre-calculated VPD table... So, if that device is sketchy, just buy different equipment and accomplish the same exact thing... hopefully a better price and better fit to size/scope of garden.
spec sheet explains it's capabilities.. this is overkill for a small room. If doing 50sq ft of canopy in a 300 sq ft room without exhausting outside, it's about the right size, i'd guess.
https://cdn.shopify.com/s/files/1/0561/9092/7032/files/revomax-opticlimate-brochure-english.pdf?v=1706378105
The one advantage it hints at but doesn't fully expllain is less oscillation of temp/rh. All that means is that it switches on and off in a tighter window. With an average dehum, for example, you'll get a 6% resultingn range of humidity.. clicks on 3% above, clicks off 3% below. If you used mart plugs and a smart temp/rh probe, you could match that with individual devices too.
Really just depends if it fits the scale of what you are doing. Bigger isn't a bad idea, but at some point it gets wasteful. Probably want a 20A (120v) circuit for their smallest option so you don't burn down your house with an electrical fire.