[. . . ] Take special note of all warnings listed in these instructions and on the unit. For example: near a bathtub, washbowl, kitchen sink, laundry tub, swimming pool or in a set basement. [. . . ] The unit exhibits a marked change in performance or does not operate normally. Antenna Do not connect an external antenna to the unit (other than that provided). Periods of Nonuse If the unit is to be left unused for an extended period of time, such asa month or longer, the power cord should be unplugged from the unit to prevent damage or corrosion. Servicing The user should not attempt to service the unit beyond those methods described in the user's operating instructions. Service methods not covered in the operating instructions should be referred to qualified service personnel. (2) For clock setting backup, follow the polarity diagram shown inside the compartment and install 2 x AAA (UM-4) batteries (purchase separately). This model incorporates following features : AM (MW) / FM receiver with digital read out on LCD Clock and Alarm timer function Wake up to Alarm (Buzzer), Radio or Melody with Snooze function Sleep timer function LCD display with back-light Rainbow Light dome After the alarm time is set, release the ALARM SET button. (a) Wake to Buzzer; (b) Wake to Radio Ensuring the desired radio channel tuned and adjust to a desired alarm volume level by rotating the VOLUME wheel, (c) Wake to Melody You may slide the MELODY switch to select one of the three Melody (sound effect). Wake to Buzzer If the AL SOUND switch is set to BUZZ, the Buzzer will sound for one hour. Wake to Radio If the AL SOUND switch is set to RADIO, the alarm will wake up to the tuned FM or AM (MW) radio station and play for one hour. Wake to Melody (sound effect) If the AL SOUND switch is set to MELODY, the selected melody will sound for one hour. When the alarm sounds, the rainbow colour light changes in higher speed. [. . . ] caution: DO NOT use a sharp , pointed object to press the RESET button. You may activate the rainbow light by sliding the RAINBOW LIGHT switch to DIM or LIGHT position. [. . . ]