No batteries are necessary to keep an eye on your relative case humidity!
These fast reacting humidifiers can be added to any case where there is room. Either use the included double-sided tape foam ring to stick into the case where it won’t come loose and damage your instrument, store in an interior compartment, or insert the back into a 1 3/8 inch diameter by 1/4 inch deep hole on the case interior (can be cut from some foam cases). These hygrometers are very fast-acting to changes in humidity as they allow the free flow of air to a hydro-reactive coil through large gaps behind the gold outer ring. However, while they are calibrated and can be re-calibrated using a screwdriver on the back of the device, they should only be used as a relative indicator, rather than for precise measurement. We recommend calibrating to an electric hygrometer at 50% humidity, then adding moisture to the case by humidifier if the device reads below the marked “Normal” range.
This device is not a humidifier and does not add or remove moisture from your case.
Dimensions: 1 11/16 inch diameter, 3/4 inch deep
Weight: 0.37 oz
1-Year Limited Warranty
This item comes with Shar's 1 year warranty covering defects of workmanship or materials. General wear and tear or mis-use are not covered. Non-transferable.
30-Day No Hassle Return Policy
If you are not satisfied with this item for any reason you may return it for a full refund within 30 days of purchase.
If you have any questions about this product's warranty or to make a return please contact our Customer Service Department at 800.793.4334 or email us at firstname.lastname@example.org