Who are the mainly wet switches distributors in the world?

Some of the well-known Wet switch distributors in the world include Digi-Key Electronics, Mouser Electronics, RS Components, Arrow Electronics, and Farnell.

What is the function of the wet switches ?

A wet switch is typically used in HVAC systems to detect the presence of water in the air handler or condensate drain pan. It is a safety device that shuts off the system to prevent water damage or flooding.