Product Overview

Our Five-Point Cobalt-Free & Halogen-Free Humidity Indicator Card (HIC CH501) is a precision paper-based sensor designed to monitor relative humidity (RH) levels in sealed environments.
It features 5 color-changing indicator dots that correspond to RH levels of 20%, 30%, 40%, 50%, and 60%.
The card changes from yellow to azure/green as humidity increases, providing a clear, visual alert of moisture exposure.
It is fully compliant with global industry standards, including J-STD-033B, MIL-I-8835A, and EU RoHS, making it ideal for moisture-sensitive electronics, semiconductor packaging, and military-grade applications.
As a professional humidity indicator card manufacturer, we offer OEM/ODM services to meet your custom requirements.

Product Parameters (Direct Translation)

Parameter	Specification
Product Name	Cobalt-Free & Halogen-Free HIC CH501 Indicator Card
Physical Form	Card-type
Humidity Levels	20%, 30%, 40%, 50%, 60% RH
Color	Yellow (original color)
Single Card Size	36mm * 98mm
Application Scenarios	PCB, IC, optoelectronic products, semiconductors, military equipment, etc.
Packaging	250 pcs/can

Key Features & Advantages

Cobalt-Free & Halogen-Free

Environmentally safe, fully compliant with EU RoHS (2004/73/EC) and REACH regulations.

High Precision

Meets J-STD-033B and MIL-I-8835A standards for reliable humidity detection.

Visual & Intuitive

Color change from yellow to azure/green allows for instant, no-tool RH level assessment.

Wide Application Range

Perfect for moisture-sensitive devices like ICs, PCBs, optoelectronics, and military hardware.

Source Factory Customization

We offer tailored solutions for card size, humidity points, and packaging.

Quality Assurance

Produced in an automated production line and passed SGS testing.

Production Standards

1.2004/73/EC (EU Environmental Protection Regulation)
2.GJB2494-95 (People's Republic of China Standard)
3.MIL-I-8835A (U.S. Packaging Standard)
4.J-STD-033B (Joint Electron Device Engineering Council Standard)

Application Industries

Our humidity indicator cards are widely used across sectors that demand strict moisture control:

Semiconductors & Electronics: IC, PCB, and optoelectronic device packaging
Military & Aerospace: Defense electronics and precision component storage
Automotive Electronics: Control modules and sensor protection
Optical & Metal Products: Lenses, coatings, and metal component anti-rust packaging
Industrial Manufacturing: Vacuum packaging for sensitive materials and components

Storage & Handling Instructions

1.Store humidity indicator cards in their original sealed iron can/aluminum foil bag until use to prevent premature color change.
2.Replace the desiccant inside the packaging after opening it more than twice.
3.Keep in a dry, cool environment, away from direct sunlight and water immersion.

Why Choose Weiyi?

As a leading humidity indicator card manufacturer based in Dongguan, we combine 10+ years of industry experience with automated production capabilities.
We ensure consistent quality, competitive pricing, and fast lead times for both standard and custom orders.
Our products are exported to 30+ countries, trusted by global electronics and manufacturing brands.