... card 1, Lead-free RoHS compliant 2, reversible color change, 3, quick delivery within 24 hours 4, OEM Humidity indicator card ... many configurations and used in many applications, such as PCB, IC, LED, especially military and semiconductor 2, Features: Humidity indicator card ... J-STD-033 requirements 6, A permanent after-sales service 3, specifications Humidity indicator card One single DOT: 8%, 10%, ...