Product review (5 stars): Perfect for my greenhouse!!
I use this to monitor the co2 in my little greenhouse with my homemade co2 generator and this thing works great!! I wanted something accurate and small and didn't cost too much and this is it! Very easy to work and it does have limits you can set to make sure the alarm doesn't go off every 5 minutes. It does change to F to C and 12 hr clock or 24 hr. Best part of all it showed up a day earlier than it said it was going to! That's always a plus for me!! GREAT GREAT GREAT PRODUCT AND EXPEIRIANCE WITH THIS!!