Review on 📝 SEAAN Reliable Formaldehyde Multi-Purpose Recorder by Rusty Calcara

I bought this for $20 and it is being sold for a higher price elsewhere or by other sellers. It's smaller than I thought it would be, but I love the design and the look - a very retro display. At this price I wouldn't expect exact readings, but I'm fine with the rough numbers and they do the job. I wish it had a black color version. Maybe I'll paint it. It looks so cool and I think I'll buy another one - $20 is a very good price.