4 points humidity indicators plugare designed to indicate the relative humidity level within a sealed container without users 
having to open it.Sensitive goods are often housed in containers that either should not or can not be opened until 
use.By installing humidity indicator plugs into the walls of these containers,users can ensure that goods are 
housed at safe humidity levels without exposing them to external elements while humidity levels are checked.

•Lead-free RoHS compliant.
•Quick delivery
•OEM allowed
•Standard,cobalt-free and cocl2-free type are available
•Meet MIL-I-8835 and J-STD-033 requirements
•A permanent after-sales service

one single dot : 8%,10%,50%...

Three dots: 10%-20%-30%, 20%-30%-40%, 30%-40%-50%, 20%-40%-60%...
four dots: 10%-40%, 20%-50%, 30%-60%...
Delivery Time:within 7 working days

Widely used in Printed Circuit Board,PCB,LED SMD,IC,wooden toys, stuffed toys,electronic packaging,optical 
equipment,electronic equipment packaging,electronic products,optical components,military products,metal 
products,organic materials,synthetic material,protective packaging, moisture sensitive components packing...

Standard packing:1pcs /bag,12 bags/can,12cans/carton