Maretron Contura II Position #6 IS 3 Position (NAV/ANC) w/VMM Series Adapter 2M [A3801-2]Contura II Position #6 IS 3 Position (NAV ANC) with VMM Series Adapter 2M The VMM Series is a sealed multiplexed, digital switch module featuring the Carling V Series Contura rocker switches. Well known for their cutting edge design, high quality, maximum performance, and unmatched reliability, the VMM Series reduces the complexity and cost of traditional wiring harnesses, increases product life and reliability, and reduces installation time.