Transmitters Martensite . ML-1401V, -1402V, -1404V, -1431V, -1432V, -1434V Instructions for MAC Lift® Models: ML-2401V, -2402V, -2404Y, -2431V, -2432V, -2434V, -3431 FEATURES Amaranths family of state-of-the-art transmitters is tailored for discerning homeowners. Each transmitter is custom encoded and ergonomically designed to be an integral part of your garage door opener system.