Each of the CTS dip switch series follows the basic part numbering pattern. However, special attention should be paid to the exact options and proper way of specifying a part number due to slight differences among the series. In general, the part number systems allow specification of the series, the number of positions, the type of pole, the type of actuator, sealing preferences, position of actuator at shipping, and the type of packing. See this and the following slides for the specific part numbering system. If custom features are required, please contact CTS for available options.