Overview:
Automotive sensors must accurately and reliably measure, monitor and control critical system data in order to maintain fuel economy and safety. But heat and humidity can create pressure differentials that create over-pressurization, or vacuum conditions, inside the sensor. Either of these can cause faulty readings or outright sensor failure, which can cascade to component or system failure.
Microvent Automotive Protective Vents are proven to reduce condensation and contaminants by:
Quickly balance the internal and external pressure of the equipment to extend the sealing life
Minimizing condensation through steam diffusion
Keep contaminants such as dust, dirt and debris out
Microvent® Automotive Protective Vents come in a variety of product forms, including screw-in vents, snap-in vents,Vent caps and adhesive vents.
Protective Vent Caps
Waterproof and dustproof, prevent the liquid and contaminants also protect the light components
Equalize pressure, balance the pressure in the light and the outside environment
Vent, keep the inside dry, reducing condensation build up by allowing the passage of water vapor out of the housing;
Microporous construction, prevent salt crystals.

Applications for ProtectiveVent Caps:
Foglight / Headlight / Tail light
Installation Instructions:
Choose correct waterproof cap dimension depend on the outer diameter of the vent pipe.
Lamp vent pipe can't be too long,it will stab the waterproof permeable membrance.
Waterproof breathable cap inner core should be trained on the lamp air vent and press the outer cove.
Please insure not loose or tight after waterproof breathable cap train on the air vent.