1.Protect degree:IP68. 2.Cert:ISO9000:2008, PAHS,REACH. 3.Test: Anti-UV , Salt spray ,High low temperature,Breath testing. This pressure compensating element is recommended for good ventilation of the enclosure and for preventing the formation of condensation .while still maintaining the high class of protection IP69K. The membrane is water and oil repellent. Breather Plug