Waterproof Pressure Equalization Vent
**This item is not available for individual purchase. The vent is only available with a purchase of one of our units, and will be installed and not packaged separately.**
This vent was designed to equalize the interior and exterior pressure. When using a flight controller that uses a barometer to sense pressure and hold altitude, this vent solves the issue of inaccurate readings that throw off the sensor. In other words, without some way to read true atmospheric pressure, your controller will adjust the height of your aircraft (based on heat build-up) without giving any inputs, causing erratic and inconsistent behavior.