Never owned a Kearsarge but recently came across picture of a 401. Controls: Dimmer - ON/OFF, Volume - HIGH/LOW, Interval Audio - ON/OFF, Power - ON/OFF, SECONDS/MINUTES, TIME/FOCUS, CANCEL, START, 3 Program Knobs which seem to control time settings from 0 to 99.9 seconds to 0 to 99.9 minutes.