Apem DIP Switches – DA ; DS Series. Apem DA, and DS series of DIP switches are SPST through-hole switches available in an array of positions. The DA series are right angled type DIP switches with a raised actuator, the DS series are standard type DIP switches with a raised actuator. Applications include telecom, computers, test equipment, security and instrumentation. Low contact resistance: 50m Insulation resistance >100M at 100Vdc