Slide the back cover off of the clock and ensure that two AA batteries are installed in the compartment. If batteries aren't installed, insert two batteries into the compartment according to the polarity diagram.
Press the "Sensor" button on the back of the clock to set the motion sensor on or off.
Press the "Mode" button on the back of the unit to select the mode you would like. You can choose between time, thermometer, alarm, date or timer.
Press the "Set" button on the rear of the unit to enter "set" mode.
Use the "Arrow" keys on the back of the unit to set the time, date, alarm or timer.