The AC-EX40-444-KIT-W is a weatherproof version of the AC-EX40-444-KIT.
AVPro Edge has brought a nano-technology conformal coating process in-house, and the AC-EX40-444-KIT is the first of our products to receive this revolutionary treatment formulated to protect against failure from liquids, dust, humidity, bacteria, and corrosion.
The formulation completely encapsulates electronic circuitry with an invisible thickness layer from a few tens to a few hundreds of nanometers, allowing penetration into every vulnerable crevice. This thin-film barrier provides complete protection from all forms of moisture, including punishing salt air.
The protection level is rated to IP68, which is exposure to moisture short of full immersion. The coating also boasts non-stick properties, which will repel almost any foreign substance, is anti-bacterial and contributes to corrosion prevention.
The treatment has been third-party tested against:

UL94
Vibration
Salt spray
Meets Military Grade spec
IP67/68
Exceeds water general hardness harm
ASTM (American Society for Testing Materials G-1 rated
RoHS Compliant (Restriction of Hazardous Substances)

Ensure you install the AVPro Edge tools that resist harsh, severe conditions and simply continue to keep working.