AEC826004NE reversible 6-spot color change humidity card was originally designed for electronics packaging and is now widely adopted in a variety of applications.  This humidity card is most commonly used in conjuction with a desiccant pak to protect and monitor products.

Read the card at lavender between pink and blue for the current humidity level.
A warning arrow points to 30%RH, pink indicates a desiccant failure.
Complies with Mil-8835 and Mil STD-2073-1D Method 50

Alt Item#: 24876827692
Indicates: 10, 20, 30, 40, 50, 60%RH
Dimensions: 1 9/16 x 4 3/4 in (40 x 121 mm)
Shelf-Life: 3 years in unopened can, shelf-life will degrade after can is opened, replace desiccant periodically
Type: Cobalt Dicloride
Package: 200 pcs /can
Minimum Order: 25 cans