... WSB-3-H1 digital thermo-hygrometer clock suit to any place, like office, household, car, meeting room, file room, mesum, filing ... as directed. Insert battery and replace door. Power the device on for the first time. Press the [RESET] key once. Hold [MODE] key for ... alarm off. Hold [MODE] for 2 seconds to change alarm time, the minute display will begin to flash, press [ADJ] to cycle ...