Part Number: 311-1233-500 (Base, switch)Part Number: 311-1233-504 (Base, switch)Part Number: 311-1233-505 (Base, switch)Part Number: 311-1233-506 (Base, switch)Part Number: 311-1233-509 (Base, switch)Part Number: 311-1233-510 (Base, switch)Part Number: 5340013516659 (Base, switch)