In summary, the right sealed switch, whether protected by a splash proof boot, IP-rated or a combination of the two offers the peace of mind that no matter what the environmental conditions actuation will occur every time without fail. Not every design requires sealed switches, but for those that do, not using one can be a costly and easily avoidable mistake. The KMR2 series, KMR4 series, KMS series, KSS series, K5AT series, K8 series, KST series, PTS125 series, PTS525 series, PTS635 series, RAFI 8 mm series of illuminated pushbutton, and LUMTAST 75, are all IP40 rated. The KSR series and the KSC5 series are IP50 rated. The KMT2 series is IP54 rated and the KT series, E series, ET series, and the EP series are IP57 rated.