HyLids hygrometer lids fit on most Mason canning jars. You are now able to monitor and adjust the relative humidity(RH) inside a jar and make adjustments as needed.
Included:
2 piece HyLids Digital Regular Mouth hygrometer lid w/outside ring
Spare Battery
I'm very pleased with this lid - it is perfect for my needs. Highly recommend, I will buy another one in the future.
It fit good with the Mason jars. I also liked the extra battery.
High quality, durable lid with excellent integrated mount of hygrometer/temp sensor. I would recommend these to anyone who needs to monitor moisture levels and temperatures of any materials in jars. I will buy more as needed in the future! Thanks for the great product!
Saved my herbs from drying out. This is the only way to know you're maintaining the correct humidity in your containers.
