Dry & Dry Humidity Indicator Cards 250 Pack (10-60% RH, 6 Spots) | Reusable Moisture Indicators for Enclosed Spaces

• 250 Premium Humidity Indicator Cards(Reusable More than 20 Times) - Cards should not be in Direct Contact with Foods or Medications
• Our Humidity Indicator Card is the Highest Quality in the Industry for Humidity Measurement. - Strictly Tested for Clear Color Change
• Indicator Changes Blue(Dry) to Pink(Humid). Humidity indicator cards are sensitive to temperature, humidity, atmospheric pressure, and wind. Therefore, they do not work well in open air. They work well and display accurate relative humidity level in enclosed space.
• When You Initially Open the Card, All Dots Sometimes React and Change Color Because They are Exposed to Sudden Humidity. If You Wait for About 30 minutes, the Card will Calibrate and You will be able to Read the Humidity Level. - 6 Spots Humidity Indicating(10%/20%/30%/40%/50%/60% RH - Clear Color Change)
• CONTINUOUSLY & ACCURATELY Displays Humidity Level - If the humidity level becomes lower, the strip will change back to blue (the original color). Just because the color has changed to the next level does not mean it cannot go back to the previous color. The colors will change depending on the humidity level. Colors may fade with long term use of more than 20 times.(See Our Customers' Review)

• Place Card in Enclosed Space — Insert one Dry & Dry Humidity Indicator Card into the enclosed environment you wish to monitor, such as a safe, storage container, or electronic enclosure. Ensure it is not in direct contact with food or medication.
• Allow Calibration Time — Wait approximately 30 minutes after placing the card in the enclosed space. This allows the card to calibrate to the ambient humidity level and ensures accurate readings.
• Read Humidity Level — Observe the six color spots on the card. They change from blue (dry) to pink (humid) to indicate the relative humidity between 10% and 60% RH. The colors will adjust dynamically as humidity levels change.
• Monitor and Replace — As humidity levels decrease, the pink spots will revert to blue. Replace the card when colors begin to fade significantly after extensive use (typically over 20 cycles) to maintain reliable monitoring.

Typical situations where Dry & Dry Humidity Indicator Cards 250 Pack (10-60% RH helps — illustrative scenarios, not customer reviews.