ELEGOO Mini Air Purifier with Activated Carbon Filter and Universal Adaptor for LCD/DLP/MSLA Resin 3D Printer(Pack of 2)

I must have item if you're doing resin printing I use these in my Saturn 3 ultra. The cartridge and it seems smaller than the one that came with the printer but you can't beat the price to them for 30 bucks... They work very good at keeping the smell out of my studio

My son bought this to put one in his 3D printer enclosure and I took the other one for my cat litter box enclosed in a piece of furniture and OMG!!!! I’m not kidding when I tell you the smell is gone. I have 4 litter boxes but I moved and one is in my bedroom in the corner enclosed in a piece of furniture and it didn’t matter if I scooped poop everyday I would walk past and still smelled it. The smell is “GONE” I’ve had cats for 40+ years and finally have peaceA+++++ in my book

Honestly, these did cut down on the smell the printer emitted. I've got to give them credit for that. That said, I'd still highly recommend putting the machine in an outside-vented enclosure. These do their job but frankly aren't big enough and don't move enough air to really cover everything.There's also the UI problem, if you can call it that. You can't really tell how charged they are - they're either on, off, or charging and the light doesn't show much else.. and they're quiet, which means you pretty much have to check for airflow to tell if it's on. :P Honestly, the USB-powered variants with printers that support them are a better idea if you're going to be printing a lot.Lastly, while you can get replacement charcoal blocks now, if you're going to use them I'd suggest just getting some trimmable carbon filter sheets; it'll be cheaper. They really don't last all that long because there's not enough surface area and they typically run for hours (lots of air circulation) if you're doing any sort of tall prints.So, basically... definitely useful, but I'm not sure how much I'd recommend them - again, a good vented enclosure is something you're going to want either way. I do use mine pretty consistently, though.

Haven't had and gripes about them. Some complained about not having a light when it's running. I don't think it needs it. It's very easy to tell when they are running. They're quiet, but they do make sound, and you can feel them running. Light feels like an unneeded power drain. As for power, some people had issues with that too. I'm not seeing it. On more than one occasion I turn them on for a print in the early evening, and they are still going by late morning when i remember I had stuff on the printer. On top of that, they went another 6-8 hours a couple of those times as i queued up another print. A single charge seems to last... I dunno, like 18 hours for me? It's just been a non issue.They're good for the price point.

Having2 is perfect. Charge one while the other runs in the printer. Odor is noticably reduced when running.

For the money, you're probably better off just buying an exhaust setup and piping it out a window. These appear to do what they're meant to do, but I've been unimpressed: They take a long time to charge with the included charger (only one included for the pair). The indicator light does not indicate when the units are on, and its function when charging is still not quite clear to me. When these do run, the airflow is minimal - so they likely aren't very efficient at circulating the air, and you have to put it up to your ear to check it's on. Some of these might be more of a feature (the low airflow is probably good for preventing drafts in your enclosure), but they also make these harder to use and/or less effective.

Works well easy to assemble

Elegoo Saturn owner. I have only one printer, and using just one of these clears out my entire room of scent, which is useful in more ways than one.... I tested it by doing an 8 hour print. I left mine OUTSIDE the machine by the two little fans in the back, and it almost immediately started making the area smell normal, and these resin printers are smelly, ha! I also keep it on while washing/curing my prints, and for about an hour after I leave the room. Then I come back, and no smell.Tested it by going for a walk to clear my nose of any smells (its a thing, look it up) and even after cold winter air, no smell that a human can pick up on.Buy it, and you likely only need to use one. I have the main one that I use, and plan on using the second one as a backup in case anything happens to the first.Comes with two extra filters, so one for each. Or for my particular needs, three (including the basic filter from my "spare" unit).BUT, BIG BIG BUT....You can not find the little activated charcoal filter anywhere. I have looked. I have found similar, but none in the appropriate dimensions, and none that were cheap enough for me to validate shaving the piece down that much.I will be instead buying some activated carbon cotton sheet as a filter. Cut several little squares (as many as needed, obviously) down to size and just layer them in the place where the little charcoal filter would normally go.Great product, works as good as advertised or even better.Stupid filter problem that NEEDS to be fixed.I say buy it, and also add some of that activated charcoal cottons sheets to your cart with it, save yourself the trouble in the future.