Designed for use in 3.3 and 5.0 vdc circuits, Type 07-coded 4-position rotary switches feature hermetically-sealed hard gold plated contacts which virtually eliminate the possibility of oxidation- contact oxidation is said to be the primary failure mode for switches that see infrequent use, because the contact wiper doesn't wipe the oxidation buildup off the contact surfaces. The series is available in many configurations.