Specification Brand : CAI - MAMAC BulletPoint : Price For: Each Fits Brand: Mi-T-M For Use With Item Number: 3WB88, 3WB89, 3WB72, 3WB90, 1RM75 For Use With Mfr. Model Number: GC-2503-0ME1, GC-3004-0ME1, GC-3004-4MGH, GC-3504-4MGH, GC-4003-3MGH Item: Inlet Filter Country of Origin (subject to change): United States BulletPoint1 : The tiny hygrometer is about 2 inches in diameter, small and compact, which is useful to monitor humidity in small containers.No batteries required, easy to use. BulletPoint2 : Big numbers so you can see through the glass top of containers. Easy to read and tiny so you can put anywhere. Please do not block the vents behind the hygrometer, which will affect the accuracy of the data. BulletPoint3 : There is a slot on the back for mounting using a small nail or just use some double-faced tape, as it doesn't weigh much.The tape will hold it good. BulletPoint4 : The hygrometer does a great job of measuring humidity in the refrigerator, food container, bookshelf, closet, incubator, brooder, etc to avoid rust, oxidation, mildew. BulletPoint5 : It has accurate readings, great for monitoring humidity in a guitar case to help avoid dry wood and cracking or monitoring the amount of humidity in your room, let you know when you need to turn the humidifier on or off. Use it in a jar with curing herbs to make sure everything is ok. Color : Black Dmid : 269128662 ExternallyAssignedProductIdentifier : 7436828797137 ExternallyAssignedProductIdentifier1 : 0696334350210 ExternallyAssignedProductIdentifier2 : 696334350210 Genre : folk-music IncludedComponents : inc ItemName : MAMAC Humidity Sensor ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 2 inches ItemPackageDimensions_Width : 2 inches ItemPackageQuantity : 1 ItemTypeKeyword : humidifier-accessories ItemTypeName : Humidity & Temperature Sensor, Room Manufacturer : CAI - MAMAC Material : Plastic ModelName : QFA3160 ModelNumber : QFA3160 MountingType : Tabletop NumberOfItems : 1 NumberOfPieces : 1 PartNumber : HU-921-MA-8 ProductDescription :