{"product_id":"humidity-indicator-cards-10-60-percent-blue-six-point-50-pack","title":"Humidity Indicator Cards 10–60% RH | 50-Pack Blue Six-Point","description":"\n\u003ch2\u003eHUXUAN Humidity Indicator Cards — 50-Pack, 10%–60% Range\u003c\/h2\u003e\n\u003cp\u003eKeep moisture under control with these \u003cstrong\u003eBlue Six-Point Humidity Indicator Cards\u003c\/strong\u003e by HUXUAN. Designed for use inside sealed containers, storage bags, toolboxes, camera cases, electronics packaging, and more, these cards give you an instant, at-a-glance humidity reading — no batteries, no devices needed. Simply place a card inside your container and the color-coded dots change from blue (dry) to pink (moist) to indicate the current relative humidity level at six checkpoints: 10%, 20%, 30%, 40%, 50%, and 60%.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstant Visual Reading:\u003c\/strong\u003e Six color-change dots clearly indicate humidity levels from 10% to 60% RH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Perfect for sealed containers, storage cases, ammo cans, camera bags, electronics boxes, gun safes, and desiccant monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLaminated Cardboard Construction:\u003c\/strong\u003e Durable, moisture-resistant laminated card material for accurate, long-lasting use\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConvenient Size:\u003c\/strong\u003e Compact 10.5 × 4 cm (4.13 × 1.57 in) cards fit easily inside any container\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat Value Pack:\u003c\/strong\u003e Comes with 50 cards per pack — ideal for multiple storage setups\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eColor: White card with blue indicator dots\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Power Required:\u003c\/strong\u003e Completely passive — no batteries or charging needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e HUXUAN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Laminated Cardboard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10.5 × 4 cm \/ 4.13 × 1.57 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White with blue indicator dots\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e 10%, 20%, 30%, 40%, 50%, 60% RH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 50 × Humidity Indicator Cards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eRemove a card from its protective packaging.\u003c\/li\u003e\n  \u003cli\u003ePlace the card inside your sealed container, bag, or case.\u003c\/li\u003e\n  \u003cli\u003eSeal the container and check the card periodically.\u003c\/li\u003e\n  \u003cli\u003eBlue dot = humidity is at or below that level. Pink\/lavender dot = humidity has reached or exceeded that level.\u003c\/li\u003e\n  \u003cli\u003eReplace or add desiccant as needed to maintain your desired humidity level.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-piece-storage-tray-360-degree-refrigerator-storage-rotating-tray-used-for-kitchen-spice-jars-and-sundry-storage-turntable-1\"\u003e360-Degree Refrigerator Storage Rotating Tray for Kitchen \u0026amp; Sundry Storage\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-foldable-food-cover-vegetable-cover-dining-table-cover-vegetable-umbrella-fly-and-dust-cover\"\u003eFoldable Food Cover – Fly and Dust Protection for Dining\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.ready.gov\/kit\" target=\"_blank\" rel=\"noopener\"\u003eReady.gov emergency supply guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a humidity indicator card and how does it work?\u003c\/h4\u003e\n\u003cp\u003eA: A humidity indicator card is a passive, chemical-coated laminated card that changes color in response to relative humidity levels inside a sealed environment. The blue dots on the card turn pink or lavender when the humidity at that percentage level has been reached, giving you an instant, no-power-required visual reading of moisture conditions inside your container.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What range of humidity do these six-point cards cover?\u003c\/h4\u003e\n\u003cp\u003eA: These blue six-point humidity indicator cards cover six humidity checkpoints: 10%, 20%, 30%, 40%, 50%, and 60% relative humidity (RH), making them suitable for a wide variety of storage and monitoring applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Where can I use these humidity indicator cards?\u003c\/h4\u003e\n\u003cp\u003eA: These cards are ideal for any sealed or semi-sealed space where moisture monitoring is important — including toolboxes, gun safes, camera equipment cases, electronics storage boxes, food storage containers, shipping packages, ammo cans, and anywhere desiccant packs are used to control moisture.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many cards come in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Each pack contains 50 humidity indicator cards, giving you plenty for use across multiple containers or ongoing monitoring needs.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a humidity indicator card and how does it work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A humidity indicator card is a passive, chemical-coated laminated card that changes color in response to relative humidity levels inside a sealed environment. 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