HyLids - Digital - Regular Mouth (2 3/4") Hygrometer Lid - FREE SHIPPING (USA)

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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.


2 piece HyLids Digital Regular Mouth hygrometer lid w/outside ring

Spare Battery


2 Reviews

  • Posted by Justin on Dec 8th 2020


    Great product - Reg Mouth Digital Hylid

    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!

  • Posted by Jami Rexrode on Mar 16th 2020


    Works Great

    Saved my herbs from drying out. This is the only way to know you're maintaining the correct humidity in your containers.